Mathematics Questions and Answers January 06, 2021

1. A manufacturer makes steel rods that are suppose to have a mean length of 50cm. A retailer suspects the bars are running short. A sample of 41 bars is taken and their mean length is determined to be 51 cm with a sample standard deviation of 3.6. Test the claim the mean is less than50 cm at the .01 level of significance (use t) 2. A test of

Afederal government agency that is responsible for setting vehicle fuel economy standards for automobile manufacturers is conducting research in order to update its fuel economy standards for the year 2030. Automobile manufacturers, and consumers, are highly interested in what the agency's ndings and determinations will be as this will affect

Proof steps please Find the first step in the following "Proof" that is incorrect, and explain in a short paragraph why the reasoning is incorrect. Statement: The equation 26456+36=64+6236+cos(6) (8) has a positive solution. In other words, there is some positive number 6 satisfying (8}. Proof: By dividing both sides of the Equation (8) by 64 + 62

Using the data, (a) Comment on the underlying pattern in the proportion of singles among residents aged 20 to 29 years over 1983 - 2020. (b)Use a suitable method to forecast the proportion of singles among residents aged 20 to 29 years for the years 2021 and 2022.

Module 7 Problem Set Score: 13/15 13/15 answered . Question 2 16650 14800 12950 11100 9250 7400 5350 3760 1850 6 9 10 11 12 13 14 15 16 17 18 75 The marginal cost of producing x thousand computer chips is given by C'(x) = 154.5x2 - 2700x + 17000 dollars per thousand chips, whose graph is shown above 18 Interpret (154.512 - 2700x + 17000) dt =

Given a population in which the probability of success is p = 0.80, ifa sample of 400 items is taken, then complete parts a and b. a. Calculate the probability the proportion of successes in the sample will be between 0.77 and 0.81. b. Calculate the probability the proportion of successes in the sample will be between 0.77 and 0.81 if the sample

QUESTION 18 The table shows the political party affiliation of each of 67 members of the US Senate in June 2012, and when they are up for reelection. The events "Other" and "Up for reelection in November 2016" are Up for reelection: Democratic Party Republican Party Other Total November 2014 20 13 O November 2016 10 24 O Total a, independent. O b.

Calculate the linear correlation coefficient by completing the following table, round all values in the table to 2 decimals. Make all calculations using 2 decimals. Note: you are given the mean and standard deviation at the bottom of the table. Sandwich Fat Calories - X-X YL-Y X-X * YL-Y (Restaurant) Content SX SY Sy (grams) - x Hardee's Big 23

1. A population of insects in a region will grow at a rate that is proportional to their current population. In the absence of any outside factors the population will increase by 10% every year. On any given year there is a net migration into the area of 300 insects and 100 are eaten by the local bird population and 100 die of natural causes. If

1. University A and B play a series of games, with the first team to win 3 games being declared the winner of the series. Suppose that university B independently wins each game with probability 0.45. Find the conditional probability that university A wins the series given that it wins the first game. (6) only do d and e 6. (20 pts) The probability

Find out if there is a relationship between the student's average score on Guizl, 2, and 3 and their score in the final exam. To do this survey to see if you can predict students' nal exam results ha sed on their average scores on the first three quizzes Ave rage grade of quiz 1,2,3[%] LWhat assumptions are important for conducting a simple linear

You are given the following data set with three observations on x and 3!. You want to estimate '91; = ,31 + '62:; + 15,-. Assume that the standard population assumptions hold. Calculate the ordinary least squares intercept coefcient. Intercept coefcient: What is the sum of squared residuals? Sum of squared residuals What is the R2 for the ordinary

course.work X + - C course.work/#!/students/61cddcdb6caaab00169e2e8d/do G Course.work My Account Student Log Out C View LIST 1 3 5 6 7 8 9 2 Save Assignment Question 4 Background : GDP and Chocolate The scatterplot below shows the relationship, per capita, between gross domestic product (GDP) (in $) and consumption of chocolate per year (in

(1) Solve the following problems. (a) [1pt] The probability mass function of some random variable X is P(X = x) = " for x = 1, 2, ...,5. What is the constant k? (b) [1pt] Use the same X as the problem (a). What is P(2 1)

The Paris Paint Company is in the process of planning labor force requirements and production levels for the next four quarters. The marketing department has provided production with the following forecasts of demand for Paris Paint over the next year: Demand Forecast Quarter (in thousands of gallons) 380 630 220 160 Assume that there are

2. Line & is tangent to the graph of y = x - at the point Q as shown in the figure on the right. a. Find the x-coordinate of point Q b. Write an equation for the line ? (0, 20) C. Suppose the graph of y = x - 500 represents a hill, with x and y measured in 500 feet. There is a 50-foot tree growing vertically at the exact top of the hill. Does a

Use the limit definition of the derivative to compute the derivative of the function f(a) = 8 + 3x at an arbitrary point . Evaluate the limit by using algebra to simplify the difference quotient (in first answer box) and then evaluating the limit (in the second answer box). f'(x) = lim f ( 2 + h) - f(z) = lim h +0 h -9 Now let's calculate the

Question 1 [9 marks] (a) In a test of the alternatives Ho: Bi = 0 versus Ho: Bi = 0, an analyst concluded Ho. Does this conclusion imply that there is no linear association between X and Y? Explain. [3 marks] (b) The regression function relating production output by an employee after taking a training program (Y) to the production output before

Chi-Squared Test - Sink or Swim The sinking of the Titanic has intrigued people, including statisticians for years. One question people have is: Was there anything that predicted whether passengers survived or not? e.g. gender (male, female), nationality (American, British, other), or class (1st, 2nd 3rd) You will choose one of these factors to

Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the survey, assume the mean annual salary for graduates 10 years after graduation is $129,000. Assume the standard deviation is $45,000. Suppose you take a simple random sample of 38 graduates. Round all answers to four decimal places if necessary. a. What is

Not everyone pays the same price for the same model of a car. The figure illustrates a normal distribution for the prices paid for a particular model of a new car. The mean is $23,000 and the Number of Car Buyers standard deviation is $1000. Use the 68-95-99.7 Rule to find what percentage of buyers paid between $21,000 and $25,000. Price of a

9. [-/0.22 Points] DETAILS BBUNDERSTAT12 5.3.015.MI.S. MY NOTES USA Today reported that about 20% of all people in the United States are illiterate. Suppose you take eleven people at random off a city street. USE SALT (a) Make a histogram showing the probability distribution of the number of illiterate people out of the eleven people in the

A hospital has three emergency generators for use in case of a power failure. Each generator operates independently and the manufacturer claims that the probability each generator will function properly during a power failure is 0.95. Let X be the number of emergency generators that will fail during the next power outage. a. What code can you use

1. What is the frequency for CEO ages between 49 and 60? Enter the exact answer.2. What percentage of CEOs are 65 years or older? Round your answer to two decimal places.3. What is the relative frequency of ages under 60? Enter the exact answer.4. What is the cumulative relative frequency for CEOs younger than 65? Enter the exact answer. Forbes

Question 4 (24 points total, 12 for the entree data and 12 for the wine data) In one study, 39 diners were given a free glass of Cabernet Sauvignon wine to accompany a Hench meal. Although the wine was identical, half the bottle labels claimed the wine was from California and the other half claimed it was from North Dakota. The following table

Determine whether Rolle's Theorem can be applied to f on the closed interval [a, b]. (Select all that apply.) f(x) = x - 3 In x, [1, 3] O Yes, Rolle's Theorem can be applied. O No, because f is not continuous on the closed interval [a, b]. No, because f is not differentiable in the open interval (a, b). O No, because f (a) * f (b). If Rolle's

5. Lindas best estimate of her earnings for the day. 857.5 Tries 2/5 ABBELL 6. the variance of the number of cars Linda sells for the day. 1.11 Tries 2/5 LAME it 7. the variance of the number of trucks or SUVs Linda sells for the day. Tries 0/5 8. the variance of Linda's earnings for the day. 313536 Tries 1/5 ABBELLLinda is a sales associate at a

Can I Have The Working How To Calculate It? Thanks a lot! 12. The table below shows the number of boxes of 100 tubes containing defectives: Firm Number of defective tubes 2 3 or more Supplier A 500 200 200 100 Supplier B 320 160 80 40 Supplier C 600 100 50 50 If one box had been selected randomly, what is the probability that (a) the box would

Retailers are always interested tn determining why a customer selected their store to make determine why its customers shopped at the store. The results are shown below. Find the percentage of the customers res they shopped at the store. Round to the nearest whole percent E Ctick the teen to View the Responses vs. Frequency 0 A. 30% O B. 50% O C.

Q1. Below are four bivariate data sets and their scatter plots. (Note that all of the scatter plots are displayed with the same scale.) Each data set is made up of sample values drawn from a population. \fStandardized Grade point test score, I average, _1' A y 3.8... 3.6 x 3.4 x 3.2 X x 3 x 2.8 x 2.6 x 2.4... x 2.2 X x x Grade point average 2...

The accompanying table shows a portion of dots consisting of the price, the age, and the mileage for 20 used sedans. Price Age Mileage 13558 4 61466 SELET 11987 42378 Click here for the Excel Doto File a. Determine the sample regression equation that enables us to predict the price of a sedan on the basis of its age and mileage. (Negative values

(1 point) Suppose that x = x(1) and y = y(t) are both functions of t. If y = 2x2 - 1, and dx/dt = 4 when x = 20, what is dyldt? dyldt = Preview My Answer (1 point) Let A be the area of a circle with radius r. If ur - 4, find A when r = 1. Answer: (1 point) Let F(x) = f(f(x)) and G(x) = (F(x)) and suppose that f (9) = 8, f(8) = 2, f'(8) = 14, f (9)

A ERAU researcher wants to examine the production capability of three manufacturing plants that utilize different production methods of the same part in order to select a plant as a supplier for a company. The effectiveness of each plant will be measured in the number of parts it can produce in an hour. Representative and random hourly production

4) Receiver operator curve(20 pts.) Suppose that are null hypothesis for a coin following a Bernoulli distribution is that it is even with qo = 0.5. However we become suspicious and believe that it is favoring heads and instead follows a Bernoulli distribution with q1 = 0.75. Let n represent the number of Bernoulli trials.a} (5 pts.) Derive the

1. During the past two homework assignments, we used the Tibbetts dataset to estimate the probability that Polistes dominula wasps will make the "correct" choice when presented with a novel pair of colors in transitive inference trials. We also tested the null hypothesis that the wasps selected colors with equal probability. If this null

(12 points) Analyze and sketch the graph of the function. Give the intervals where the function is increasing / decreasing as well as where the function is concave up- ward/ downward. Label any intercepts, relative extrema, points of inflection, and asymptotes. f ( x ) = x2/3 f ( x ) = -5(x - 1) -5(2x + 1) NIUT -X 37x f ( x) =

If the total cost function for a product is C {I} = 400 + 9:: + 0.01m2dollar5, determine how many units it should be produced to minimize the average cost per unit? \fA manufacturer of face shield has a fixed cost of $10 and a variable cost of $3.00 per unit for one particular face shield. For this face shield. find the Clx} for monthly total cost

1. Which one of the following statements is true? a. When predicting one quantitative variable based on another, the variable you are trying to predict should always go on the x -axis of the scatterplot. b. The intercept in a regression equation can never negative. c. The correlation coefficient has no units. d. A very strong relationship between

3. [-/2 Points] DETAILS TANAPCALC10 6.2.060. ASK YOUR Oil Spill In calm waters, the oil spilling from the ruptured hull of a grounded tanker forms an oil slick that is circular in shape. If the radius r of the circle is increasing at the rate of 20 r'(t) = V 2t + 4 ft/min t min after the rupture occurs, find an expression for the radius at any

Cumul 20 109 120 Length (cm) (a) (i) Write down the median length. (ii) What percentage of flower stems are 60 cm or greater? [4] The same data is presented in the following table. Length x cm OSIS 30 30

III. State what sampling technique is applied in the given situations. Write your answer on the space provided in each number. (14 points) 1. A sample of 10 will be selected from a population of 40 patients. Every 3"d element of the population will be included in the sample. 2. Five students will be selected from the list of 40 students in a class

Reference: Calculus and Its Applications, 12th, by Marvin L. Bittinger and David Ellenbogen Book Elementary Applied Calculus I need help with questions These are practice questions List the points in the graph at which the function is not differentiable. Ay X XO X1 X2 X3 X4 X5 Select all that apply. B. X2 A. X4 OD. X1 OC. X5 F. XO DE. X3a. Use the

1. Confidence Interval for proportion Stanford University conducted a study of whether running is healthy for men and women over age 50. During the first year of the study, 7 of the 451 members of the 50-Plus Fitness Association died. We are interested in the proportion of people over 50 who ran and died in the same eight-year period. Round your

Lix LA Ein Compare Protect Resume Hide Ink Assistant anges compare Ink Resume SCENARIO 4 Before the start of a school year, a company donates 100 computers to Pine Elementary School with the hope that this will improve students' learning. Prior to this, the school - which is located in a lightly populated and economically impoverished region - did

Three FM radio stations ( A , B , and C ) are competing for customers in the same market area. Through an aggressive advertising campaign, each month station A is capturing 10% of station B 's customers and 5% of station C 's customers. (Hint: The phrase "station A is capturing 10% of station B 's customers" means that 10% of the listeners are

Only I need the answer D Question 13 Ipt_ The following table presents a sample of 500 people who were tested for the COVID-19 virus in Costa Rica, classified by sex and positive or negative case. Calculate how many total negative cases were determined. COVID-19 Men Women Total negative cases 180 110 290 positive cases 140 70 210 Total 320 180 500

Blackboard G O X 2 2 A 9 95 minutes remaining 26 OF 46 QUESTIONS REMAINING The tread Tire of a particular brand of tire is a random variable best described by a normal distribution with a mean or 60,000 miles and a standard deviation of 1,700 miles. What is the probability a particular tire of this brand will last longer than 58,300 miles? A

Week 5 Case Study - Two-sample t-test In Excel (Case Study #3) Case Study #3 is intended to test your knowledge of how to appropriately compare two means. The data file has 50 randomly selected student debt amounts from 2018 and 50 randomly selected student debt amounts from 2013. The data fields included are as follows: ' Debt in 2018 (dollars) -

Question 6 10 pts In an experiment to see if students can tell the difference between Coke and Pepsi, a random sample of 50 students at School A were asked to identify what brand was given to them. They were only provided Pepsi, and of the 50 students, 38 correctly identified the soda as Pepsi. A separate sample of 50 students at School B was

7. The mean production in a certain factory is 10 products per hour with a standard deviation of 1.5 products per hour. What is the probability of finishing more than 12 products per hour? 8. The average battery life of a cellphone is 25 hours with a standard deviation of 5 hours. If it follows a normal distribution, how many hours should be the

where d = 1, 2, ... , 9. Calculate Pr(d) for d = 1, 2, ..., 9, check that the sum of all probabilities is one, and graph the probability mass function in Excel. (a) What is the expected value of the leading digit? (b) What is the median value of the leading digit? (c) What is the modal value of the leading digit? (d) What is the probability that

Help please. A manager at an ice cream store is trying to determine how many customers to expect on any given day. Overall business has been relatively steady over the past several years, but the customer count seems to have ups and downs. He collects data over 30 days and records the number of customers, the high temperature (in degrees

A recent survey indicated that 55% of college students prefer McDonalds over Burger King. Conduct a hypothesis test to determine if this number is significantly less than 55% at your school. Calculate the test statistic for this hypothesis and show it here. level of Alpha is 0.05 37 out of 90 surveyed at your school said they preferred McDonalds.

Row Player Position Age Team Games Played Games Started Minutes Per Ga FG FGA FG% TRB AST STL 4 Joel Embiid BLK Points Per Gam Bin(FG%) C 26 PHI 51 51 31.1 9 17.6 0.513 10.6 Giannis Antetol 2.8 1 PF 1.4 28.5 26 MIL 0.5 to 0.6 61 61 33 10.3 18 0.569 11 5.9 Luka Doncic 1.2 1.2 PG 21 28.1 DAL 66 0.5 to 0.6 66 34.3 9.8 20.5 0.479 8 8.6 1 0.5 Zach La

pls let me know how to do it 1. [-/1 Points] DETAILS LARCALC11 12.1.007. Find the domain of the vector-valued function. (Enter your answer using interval notation. ) r(t) = F(t) + G(t), where F(t) = cos ti - sin tj + 9v tk, G(t) = 4 cos ti + sin tj Need Help? Read It Watch It 2. [-/1 Points] DETAILS LARCALC11 12.1.012. Evaluate the vector-valued

help! 4. Consider a 20-year term insurance issued to a select life aged 40 by a single premium, with sum insured $500,000 payable immediately on death. Assume mortality follows the Standard Select Life Table, with UDD between integer ages, and assume an interest rate of 5% per year. Calculate the net single premium

4-80. In a large shipment of electronic parts, 0.015 are bad. The parts are tested using a machine that correctly identifies bad parts as defective with a probability of 0.98, and correctly identifies good parts as nondefective with a probability of 0.95. a. If a part is randomly sampled from the shipment and tested, what is the probability that

3. (5 points) Sketch the graph of the following function by first identifying the more basic fund tion. Also, determine the domain and range of the function f(z) = 3+ 2) + 3 3 4. (5 points) From the function f(I) = 12, we obtain the function g by moving the function units to the right and reflect across the y-axis. Write the formula for g(I). 5.

Older than the average bear : The Canadian Journal of Zoology published data on the age (in years) and weight (in kg) of black bears. One bear was much older than all of the others in the data set. MODEL 1 ( Bear ): 1.What is the R Square for the Model? The Adjusted R 2 (Effect Size)? The Standard Error of the Estimate (SEE)?2.What is the t value

(4) Use the Random Babies applet for this problem. On your computer, type in http://www.rossmanchance.com/applets/randomBabies/RandomBabies.html. This applet is simulating the following scenario. When their name tags are lost, four babies are mixed up at a hospital. Then each baby has to be assigned randomly to a family. The simulator simulates a

Ra Question 10, 4.1.21-T HW Score: 86.36%, 9.5 of 11 E Homework: week 5 (homework ibrary assign 5) intro to probability, s Part 2 of 2 points Points: 0.5 of 1 Save R Ar The data in the accompanying table indicate whether the past 50 babies delivered at a local hospital were delivered using the caesarean method. A a. Based on these data, what is

Over the past several months, an adult patient has been treated for tetany (severe muscle spasms). This condition is associated with an average total calcium level below 6 mg/dl. Recently, the patient's total calcium tests gave the following readings (in mg/dl). Assume that the population of x values has an approximately normal distribution. 10.1

It is increasingly recognized that microbiota affects host health and physiology. However, it is unclear what factors shape microbiome community assembly in nature, and how microbiome assembly can be manipulated to improve host health. All plant leaves host foliar endophytic fungi, which make up a diverse, environmentally acquired fungal

v The third National Health and Nutrition Examination Survey collected body fat percentage (BF%) and gender data from 13,601 subjects ages 20 to 80. The average BF% for the 6,580 men in the sample was 23.9, and this value was 35.0 for the 7,021 women. The standard error for the difference between the n and women BF%s was 0.114. Do these data

Last semester, students in a statistics class at LMC collected random samples of M&Ms candy and counted the proportion of blue M&Ms in each sample, in order to estimate the true proportion of blue M&Ms in the population of all M&Ms. Here are the results. These dot plots show the proportion of blue M&Ms, corresponding with different sample sizes n

Question 4 6 pts A medical researcher is interested in knowing what percentage of the U.S. population has a certain gene. The researcher collect a random sample of 498 people from across the country, and tests them for the gene. The gene was present in 81 of the 498 people tested. a) Find a 90% confidence interval for the true proportion of people

Problem 1: Emmy has 3 dresses (white, pink, and blue) and 3 blouses (black, white, and green) and 4 Shoes (purple, sparkle, unicorn, red). If she wears one of each, how many outfits can she make? Problem 2: Tommy has 5 different ties, 2 different blazers, 4 different shirts and 3 different pairs of pants. If he wears one of each, many different

Use synthetic division to determine whether the first expression factorization. If it is not, enter "DNE". - 4, 4x- 16x3+ 3x - Is it a factor? Select an answer Factored form: (x - 4) . ( Preview Points possible: 6 This is attempt 1 of 1. Submit 2021 XYZ Homework | Privacy Policy I ADA Compliance PDF | Contact Us xyzHomework is powered by IMathAS @

A population of fruit flies contains two genetically determined kinds of individuals: white-eyed flies and red-eyed flies. Suppose that a scientist maintains the population at constant size NN by randomly choosing NN juvenile flies after reproduction to form the next generation. Eventually, because of the random sampling in each generation, by

a. Use the product rule to nd the derivative of the given function. b. Find the derivative by expanding the product rst. h(z) = (4 22) (z3 42 +4) a. Use the product rule to nd the derivative of the given function. Select the correct answer below and fill in the answer box(es) to complete your choice. 0 A. The derivative is (4 22) (|:|) + (z3 42+

Determine whether each statement is true or false. You have one submission for each statement. (a) If demand is unitary when the unit price is p = $4, then revenue will decrease if the unit price is increased slightly from $5. 'True 'False (b) If demand is unitary when the unit price is p = $4, then revenue will decrease if the unit price is

Propose a formula for the sum of the first n-terms of the sequence. Pick the base ( > 10), write the formula with your chosen base, and then prove it by using the mathematical induction method. a 1 , a 2 , a 3 . . . . Thank you in advance.

e: You can see from your plot that whenever one of your solutions is better in cost, it is worse in calories; and whenever one is better in calories, it is worse in cost. A set of solutions having this property is said to be efficient (with respect to cost and calories). Do you think that any collection of solutions found for some diet problem in

Find the indicated confidence interval. Assume the standard error comes from a bootstrap distribution that is approximately normally distributed. A 95 % confidence interval for a proportion p if the sample has n = 500 with p = 0.42, and the standard error is SE = 0.02. Round your answers to three decimal places. The 95 % confidence interval is i to

There is a 25% chance that a randomly selected individual will have blonde hair. Suppose we randomly select 15 individuals from the population and see whether they have blonde hair. Let X denote the number of individuals in the sample that have blonde hair. (a) What is the distribution of X in conventional statistical notation? (b) What is the

A tutoring company prepares students for the SAT and they make that clear to their students. mean Standard deviation 35. The SAT math score is 650 with a) If a student is randomly selected, what is the probability that his or her score will be less than 625? 6) So if a student scores less than 625, would that be unusual? Should we doubt the

Suppose we have a fair 6-sided die that we roll "A" number of times. For each random variable, match it to the correct distribution: A) Roll until we see our first three (3). A = the number of rolls. What is the distribution of A? B) Roll the die 10 times. Let A = the number of even outcome. What is the distribution of A? A. Bernoulli (1/2) B.

A. Directions: Identity the sampling technique used in each of the following scenarios SCENARIO SAMPLING METHOD 1) A researcher randomly selected 10 barangays in a town for a study. She did this by writing the names of each barangay on a piece of paper and putting it in a bowl then drawing 10 pieces of paper from it. 2) The Grade 10 students of

X 81 75 71 61 96 56 85 18 1 80 82 83 57 100 30 68 56 (a) Calculate the covariance of x and y, denoted Sxy. (4) (b) Calculate the least squares (bo and bj ) and provide the regression equation j = bo + bix. (5) (c) Calculate the coefficient of correlation? (5) (d) Calculate the coefficient of determination? (2) (e) What does the coefficient of

The question is below. Thanks Results for this submission Entered Answer Preview Result -32200e-26 -6.7162E-08 incorrect V6 incorrect incorrect At least one of the answers above is NOT correct. 2 of the questions remain unanswered. The temperature at a point (x, y, z) is given by T(x, y, z) = 1400e-13-2y-2 where T is measured in "C and r, y, and z

Question 15 On the normal curve, a point of inflection is O a. neither the highest point on the curve nor one of the lowest points O b. both the highest point on the curve or one of the lowest points O c. the highest point on the curve O d. either of the lowest points Question 16 The place where the normal curve is the steepest (most vertical) is

Problem #1 (15 points) Times for a Table Dominick Aldo owns and operates Carolina's which is an Italian restaurant in New York. The Excel file Single Population.xIsx is shown below and contains the amount of time that table times varied from table to table. Test the hypothesis that the average table time exceeds 98 minutes using a = 0.05. What is

please send answers asap Information for Part C Questions Two sources of income with equal present values C at time 0 provide annual payments in arrears during 10 years. The first product, i.e. Product 1, pays 50, 000 - 2, 000k, where k is measured in years, and the second product, i.e. Product 2 pays a constant annual amount of b. The present

1. Rolled oats (dry oatmeal) come in cylindrical containers with a diameter of 5 inches and a height of 9 inches. These containers are shipped to grocery stores in boxes. Each shipping box contains six rolled oats containers. The shipping company is trying to figure out the dimensions of the box for shipping the rolled oats containers that will

2. [1 point] State a formal research question for this analysis. Your question should clearly identify (i) the sample unit, (ii) the response variable, and (iii) the explanatory variable. Think about how the data would be graphed; the response would go on the yaXis. 3. [3 points] Based on your research question, write a brief statement that

Suppose that continuous random variable X has the following PDF: fx(x) =x219 for 0 Sx

Suppose that continuous random variable X has the following PDF .fA(x) .e 9 for 3. If random variable Y 2X, what is the PDF of Y, fy(y) a. 72 b. 72 c. 8y2 9 d Y2 18 y2 18 for 0 fy 3 for 0 Sy 6 for 0 fy 3 for 0 S y 6 for 0 3 f. None of the other answers are correct. g. 429 h y2 36 8)P9 2y2 9 k. 4y2 9 l. 2y29 m. Y2 36 for 0 s y 3 for 0 S y

1. Watch the video below and discuss the type of sampling methods: https://www.youtube.com/watch?v=be9e-Q-jC-0&t=3s 2. The registrar intends to take a probability sample of n = 200 stu- dents and project the results from the sample to the entire popula- tion of full-time students. a. If the frame available from the registrar's files is an

The owner of a store created a 99% confidence interval to estimate the population mean sales per customer. The confidence interval he created was ($7.65, $8.50). The owner had used a random sample of 46 customer sales and assumed the population standard deviation was $2.33. A) Check the relevant conditionsfor the owner. B) The owner has

9. According to the website correlated.org, 41% of people are okay with eating spray cheese from a can. Suppose we consider all possible samples of 200 people. Find the mean and standard deviation for the random variable "number of people who are okay with eating spray cheese from a can" for groups of this size

A survey of 100 students was made to determine whether or not they prefer to attend online lecture sessions. The results are summarized in the following table: Gender Online Lecture Prefer Not Prefer Total Male 48 12 60 Female 25 15 40 Total 73 27 100 i) If a female in the survey was selected, find the probability that she is not preferred the

Busy avenging the murder of his father, Inigo Montoya asks you to answer the following questions by circling the best answer(s) for each. In a hypothesis test, the prob-value is: (circle all that apply) The probability that the null hypothesis is true. The probability of observing data as rare as or more rare than we did while assuming the null

Question 10 The number of Atlantic hurricanes that occurred each year are listed below starting with the year 2010. Find the median of the data. 12 7 10 2 6 4 7 10 15 10 Hurricanes 7 Hurricanes 6 Hurricanes 5 Hurricanes The number of Atlantic hurricanes that occurred each year are listed below starting with the year 2010. Find the mode of the

I uploaded two files with questions. Answer questions A to F please A recent survey in Victoria revealed that 30% of the vehicles travelling on highways, where speed limits are posted at 100 kilometres per hour, were exceeding the limit. Suppose you randomly record the speeds of 4 vehicles travelling on the Hume Highway, where the speed limit is

I need help on this question A ship sailing parallel to shore sights a lighthouse at an angle of 11 from its direction of travel. After traveling 3 miles farther, the angle is 21. At that time, how far is the ship from the lighthouse? Round your answer to two decimal places as needed. O A. 6.19 mi O B. 3.00 mi O C. 3.30 mi O D. 1.60 mi

17) The cholesterol levels (in milligrams per deciliter) of 30 adults are listed below. Draw a 17) box-and - whisker plot that represents the data, then tell the interquartile range. 154 156 165 165 170 171 172 180 184 185 189 189 190 192 195 198 198 200 200 200 205 205 211 215 220 220 225 238 255 265 18) The data below are the average monthly

Question 3. (4 points for each part (a)-(c), graded for correctness.) Determine whether the statements are (always) true or (at least sometimes) false. Circle your choice and provide a mathematical argument (in complete sentences) to explain your choice. That is, either provide valid reasons why the statement is true, or give a counterexample

Comment on the distribution of the variables. What are the ranges and averages for continuous variables? Do we have any missing data? Points Assists Steals Blocks Turnovers Min. : 0. 400 Min. : 0.00 Min. :0. 0000 Min. :0. 0000 Min. :0.000 1st Qu. : 4.700 1st Qu. : 0.80 1st Qu. : 0. 4000 1st Qu. : 0. 2000 1st Qu. : 0. 600 Median : 7.800 Median :

The probability that a standard normal random variable Z takes a value in the union of intervals (00, a] U [(L, 00), which arises in applications, will be denoted P(Z S a or Z 33 (1.). Use Figure A2 to nd the following probabilities of this type. Sketch the density curve with relevant regions shaded to illustrate the computation. Because of the

Student: judith Gonzalez Date: 04/27/22 Instructor: Carol Curtis Course: Math 11 -Spring 2022 Assignment: Section 9.1 Homework Print 5. A study was conducted to determine the proportion of people who dream in black and white instead of color. Among 287 people over the age of 55, 79 dream in black and white, and among 293 people under the age of

5. A survey of subscribers to Forbes showed that 72% have investments in money market funds (Forbes 1993 Subscriber Study). Further, of those who have invested in money market funds, 27.78% have also invested in certificates of deposit (CDs). Of those who have not invested in money market funds, 58.57% have invested in CDs. (a) Organize the above