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Mathematics Questions and Answers February 28, 2023

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'a i-iostcci by ALEKS Corp. Week 4 Quiz 2, Previous 1 1 [31' 3 4 [3 6 7 8 9 10 Next ' fl Question 5 of 10 (1 point) 7.2 Section Exercise 14 '" " Arecent survey of 9 social networking sites has a mean of 13.64 million visitors for a specific . - -* - lion. Find the 99% confidence interval of the true Check 1 month. The standard deviation svas 3.7

The retail price of a medium-sized box of a well-known brand of cornflakes ranges from $2.24to $2.66. Assume these prices are uniformly distributed. *Round your answer to 2 decimal places, the tolerance is +/-0.01. **Round your answer to 3 decimal places, the tolerance is +/-0.001. ***Round your answer to 4 decimal places, the tolerance is

Week 6 Assignment: Contributing to Theory: Independent, Mediating, Moderating and Dependent Variables Examine the literature in your topic area and identify five articles published within the past five years that investigate mediating, moderating, or independent variables in an attempt to contribute to theory in the topic area. Write a paper in

The cost, in cents, to produce x cups of Mountain Thunder Lemonade at Juniors LemonadeStand is C(x) = 18x + 240, x 0 and the price-demand function, in cents per cup, isp(x) = 90 3x, 0 x 30.

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i am selling my house, and have decided to accept the first offer exceeding $k. assuming that offers are independent random variable with common cumulative distribution function f, find the expected number of offers received before i sell the house.

A multiple-choice test consists of 10 questions. Each question has answer choices of a,b,c,d, and e, and only one of the choices is correct. If a student randomly guesses on each question, what is the probability that she gets at most 2 of them correct? Carry your intermediate computations to at least four decimal places, and round your answer to

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2.15. - The GMAT scores from a sample of 50 applicants to an MBA program indicate that none of the applicants scored bellowed 450. A frequency distribution was formed by choosing class intervals 450 to 499, 500 to 549 and so on, with the last class having an interval from 700 to 749. Two applicants scored in the interval 450 to 499, and 16

8 Signature Assignment: Fictitious Statistical Study This week you will develop a fictitious problem and data set that utilizes specific statistics to analyze the data. The goal of this project is to allow you to demonstrate your cumulative knowledge and to operationalize your learning in a scholarly manner. Activity Resources Review all course

Suppose out of a population of 100 people,80 have receivedat least onespeeding ticket in the last year. If one person out of this population is selected at random, what is the probability that person has received at least one speeding ticket in the last year? A. 0.80 B. 0.20 C. 80 D. 100

A cola-dispensing machine is set to dispense 10 ounces of cola per cup, with a standard deviation of 0.8 ounce. The manufacturer of the machine would like to set the control limit in such a way that, for samples of 42, 5% of the sample means will be greater than the upper control limit, and 5% of the sample means will be less than the lower

Statistics 5 1. A researcher is comparing the reaction times of 10 year olds who play video games and 10-year-olds who do not. Random samples from each group provide the results shown below. Reaction times of 10-year- olds Players of Video Games Non-Players Of Video Games Sample size 15 10 Mean reaction time (seconds) Standard deviation of

An expert reviews a sample of 10 scientific articles (n = 10) and records the following numbers of error in each article: 0, 4, 2, 8, 2, 3, 1, 0, 5, and 7. Compute the SS, the variance, and the standard deviation for this sample using the definitional and computational formulas.

Labor Force Statistics from the Current Population Surve Original Data Value Series Id: LNS14000000 Seasonally Adjusted Series title: (Seas) Unemployment Rate Labor force status: Unemployment rate Type of data: Percent or rate Age: 16 years and over Years: 2006 to 2016 Series ID LNS14000000 LNS14000000 LNS14000000 LNS14000000 LNS14000000

A department store is holding a drawing to give free shopping sprees to two lucky customers. There are 16customers who have entered the drawing: 6live in the town of Gaston,4live in Pike, and 6live in Wells. In the drawing, the first customer will be selected at random, and then the second customer will be selected at random from the remaining

A clinical trial for a new fertility treatment was provided to 250 women for a 10 year study perio~Investigators were interested in noting when women became pregnant for the first time (subsequent pregnancies were not an outcome of interest, only first pregnancies). Every 2 years, they came in for a follow-up visit and were asked if they were

Overproduction of uric acid in the body can be an indication of cell breakdown. This may be an advance indication of illness such as gout, leukemia, or lymphoma.Over a period of months, an adult male patient has takentenblood tests for uric acid. The mean concentration wasx= 5.35 mg/dl.The distribution of uric acid in healthy adult males can be

Please help with this question in the next 30 min! What is the variance of the scores 0, 1, 1 and 2? a. .25 b. .5 c. v.5 d. 1

A new process for producing synthetic diamonds can be operated at a profitable level only if the average weight of the diamonds produced by the process is greater than 0.5 karat. To evaluate the profitability of the process, a sample of six diamonds was generated using this new process, with recorded weights .46, .61, .52, .48, .57, and .54 karat.

CHE 405 Dr. Grunenfelder HW 3 Due: 9/18/15 (beginning of class) Excel spreadsheets for the data sets in this assignment can be downloaded from blackboard (assignments folder: HW3 spreadsheet). For all problems requiring plots or calculations in Minitab, turn in screenshots with your assignment. Problem 1: In class we discussed the following

If the cumulative distribution function of X is given by F X (x) =0 x < 0 1/2 0 x < 1 3/5 1x < 2 4/5 2x < 3 9/10 3x < 3.5 1 x 3.5 calculate the probability mass function of X.

The table lists the smoking habits of a group of college students. Sex Non-smoker Regular Smoker Heavy Smoker Total Man 135 52 5 192 Woman 187 21 5 213 Total 322 73 10 405 If a student is chosen at random, find the probability of getting someone who is a man or a non -smoker. Round your answer to three decimal places. A) 0.936 B) 0.948 C) 0.941 D)

Among the 20 first-class passengers on the flight,there were four businessmen from the Middle East. Two of them were the two selected to be searched. They complained of profiling, but the airline claims that the selection was random. What do you think? Support your conclusion with a simulation.

Chapter 13 Short Answer Assignment (worth 40 points) Problem 1: The items below are based on the following scenario. A study explored the relation between whether a person had or had not sought psychological counseling and the person's profession. The results and an excerpt from the results section of this fictional study follow. Observed (and

Multiplying polynomials Find the product. ( m n + k ) ( m + 9 n 3 k ) simplify your answer

Question 23 A random sample of 16 students selected from the student body of a large university had an average age of 25 years. A researcher wants to determine if the average age of all the students at the university is significantly different from 24. Assume the distribution of the population of ages is normal with a standard deviation of 2

A company that manufactures small canoes has a fixed cost of $ 1 8 , 0 0 0 . It costs $ 60 to produce each canoe. The selling price is $ 240 per canoe. (In solving this exercise, let x represent the number of canoes produced and sold.) a. Write the cost function. c(x)= b. write revenue function R(x)= c. Determine the break even point (type a

Evaluate x/(1-4x^2)dx. Evaluate x/(1-4x^2)dx. Evaluate x/(1-4x^2)dx.

Determine the linear regression model to predict the cost of a house. Given that the 145 is the estimated mean value of Y and X is zero and 7.4 is the estimated mean value of Y for every one unit change in X. a) What is the cost of the 8-- sq. feet house?b) What is the application of B0? c) Between what two values will the middle 95% of the

A set of final exam scores in an organic chemistry course was found to be normally distributed, with a mean of 73 and a standard deviation of 8. What is the probability of getting a score of 91 or less on this exam? Place your answer, rounded to 4 decimal places in the blank.

A multiple-choice test has five questions, each with five choices for the answer. Only one of the choices is correct. You randomly guess the answer to each question. What is the probability that you answer at least one of the questions correctly?

MATH-1C Mini-Project 2 (3 points.) Name:___________________ Directions: Show all necessary work. Due date: Tuesday, February 17, at the beginning of the class. Use the following steps to show that ( 1) n 1 n ln 2 n 1 Let hn and s n be the partial sums of the harmonic and alternating harmonic series. (a) Show that s 2 n h2 n hn (b) From

This question is for Rudra only. Two boats, the Prada (Italy) and the Oracle (USA), are competing for a spot in the upcoming Americas Cup race. They race over a part of the course several times. The sample times in minutes for the Prada were: 12.9, 12.5, 11.0, 13.3, 11.2, 11.4, 11.6, 12.3, 14.2, and 11.3. The sample times in minutes for the Oracle

A certain lottery has 35 numbers. In how many different ways can 4 of the numbers be selected - order of selection not important

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NEW HOMEWORK QUESTIONS GIVEN October 14, 2015 Please help with Part A and C Part C

Using an eigenfunction expansion in to solve for G ( r, , t| r0 , 0 , 0) that satisfies \u0012 \u0013 (r r0 ) ( 0 ) it 1 G 1 2G 2G = r + 2 e , r > 0, 0 < < r r r r 2 t2 r G G = 0, = 0, r 0 =0 = G outgoing as r Some guy refer me this is monochromatic wave in upper half plane, could any one solve this Green's function? 1

I'm doing a MATLAB project that takes weather conditions (i.e. temp, humidity, pressure, wind speed in x and y comp,) and is clustering them. This, as I'm told, is "classifying" days according to their weather conditions and is important to meteorology. It takes in 1000 data points, for 7 clusters, 7 excel files are created. Each excel file

Consider the following statements concerning the methodology of classical hypothesis testing: A. The decision to reject the null hypothesis is made when the p-value is less than alpha. B. The decision to rejectH o implies that the sample data used for the test must have been inappropriate and a different sample will always need to be re-selected.

\f\f\f\f\f\f\f\f\fMTH 2001: Project 2 Instructions Each group must choose one problem to do, using material from chapter 14 in the textbook. Write up a solution including explanations in complete sentences of each step and drawings or computer graphics if helpful. Cite any sources you use and mention how you made any diagrams. Write at a level

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A piece of wire 124 cm long is cut into two pieces, and each piece is then bent into a circle.The radius of one of the two circles is 10 cm greater than the radius of the other. Find theradius of the smaller circle. (Recall that the circumference of a circle of radius r is 2r.)

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You are a member of your local apartment association. The association represents rental housing owners and managers who operate rental properties. Recently, the association has received several complaints from renters in a particular area that feel that rent is much higher compared to other parts of the city. You want to investigate the rental

After a careful demographic analysis, a university forecasts that student enrollments will drop 3% per year for the next 12 years. If the university currently has 14,000 students, how many will it have in 12 years?

I posted the questions on a word document let me know if that's better

Math 233 Unit 2 Individual Project A computer virus is a malicious program that can cause high levels of destruction to your computer or your mobile device. Even with an antivirus program installed, infections can still spread very rapidly as it is restricted to detecting infections, based on information on previous virus code. A team of experts

The game of Mastermind starts in the following way: One player selects four pegs, each peg having six possible colors, and places them in a line. The second player then tries to guess the sequence of colors. What is the probability of guessing correctly?

MS&E 252 Decision Analysis I Handout 29 11/18/2016 Homework Assignment #7 Due on Thursday December 1st 11:59 pm Homework Submission Logistics: You can access the MS&E 252 homework submission site at https://mse252.stanford.edu. Click on \"Assignments\" on the left-hand menu. You may submit homework answers multiple times. Only the last submission

1 Question 1 A ______ sample is a sample in which each member of the population has a known, nonzero, chance of being selected for the sample. probability systematic simple random convenience Question 2 In _______ sampling, we divide the population into mutually exclusive groups and randomly sample from each of these groups. stratified cluster

Chapter 6 Practice Question 1 If x is uniformly distributed over the interval 8 to 12, inclusively (8 x 12), then the probability, P(13 x 15), is ____________ . 0.250 0.500 0.375 0.000 1.000 Question 2 If x is uniformly distributed over the interval 8 to 12, inclusively (8 x 12), then P(x 10) is _____________ . 0.750 0.000 0.333 0.500 0.900

Suppose a random sample of 49 is selected from a population with a standard deviation of 14. If the sample mean is 125, the 99% confidence interval to estimate the population mean is between ____________. I have performed my analysis and have seen the answer but my struggle seems to be determining the t-value.

TABLE A.7 Critical values of t (from the 3rd edition textbook) Upper tail area (shaded) 0 tcrit t Upper tail areas df t.10 t.05 t.025 t.01 t.005 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 3.078 1.886 1.638 1.533 1.476 1.440 1.415 1.397 1.383 1.372

Business Statistics, ISOM2500 (L1) Practice Final 1. In a simple linear regression, the least squares regression line is (a) the line which makes the sample correlation as close to +1 or 1 as possible. (b) the line which best splits the data in half, with half of the data points lying above the regression line and half of the data points lying

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The fasting blood glucose level of a randomly selected person was measured for seven days and the following readings were made: 7.0, 7.7, 6.8, 7.1, 7.1, 6.1, 7.3. It is reasonable to assume that the glucose level distribution is normal. A diabetes researcher would like to study the variability in the fasting blood glucose level readings for the

Clearly identifying the independent and dependent variables General Requirements: Use the following information to ensure successful completion of the assignment: In a study investigating the effects of humor on memory, Schmidt (1994) showed participants a list of sentences, half of which were humorous and half were non-humorous. Schmidt found

Decide if the events A and B are mutually exclusive or not mutually exclusive. A die is rolled. A: The result is an odd number. B: The result is an even number. A) mutually exclusive B) not mutually exclusive

A population of sports teams is comprised of 26 individual teams. We wish to randomly sample 4 teams for observation. If each team has an equal likelihood of being selected, what is the probability that any given sample of size 4 will be selected?

1)Graph the line with slope 1 passing through the point (-3,-2) . 2) Graph the line x-2y=4 3) Find the slope of the line 2x-5y=3 4) Consider the line 2x-8y-7 What is the slope of a line parallel to this line? What is the slope of a line perpendicular to this line? 5) If a line passes through the point (-1,3) and has a slope of 8, Write an equation

A political polling company wants to know if there are differences among people of different political parties with respect to their views on a bill recently proposed in Congress. The company conducted a survey of 300 people and got the following results. Do the results support the hypothesis that there are differences among people in different

A company is considering expansion of its current facility to meet increasing demand. If demand is high in the future, the major expansion would result in an additional profit of $800,000, but if demand is low then there would be a loss of $500,000. If demand is high, the minor expansion will result in profits of $200,000, but if demand is low

In a large population, 72% of the households have cable tv. A simple random sample of 100 households is to be contacted and the sample proportion computed. What is the probability that the sampling distribution of sample porportions is less than 68%? a) 0.1865 b) 0.3187 c) 0.0932 d) 0.6813 e) 0.8135 f) None of the above Review Later Question 8

a polynomial f(x) and one of its zeros are given. factor f(x) as a product of linear factors. f(x)=4x 3 -19x 2 +92x-60; 2+4i

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In 1997, a survey of 900 households showed that 151 of them use e-mail. Use those sample results to test the claim that more than 15% of households use e-mail. Use a 0.05 significance level. Use this information to answer the following questions? a. What is the hypothesis test to beconducted? b. What is the teststatistic? (round to 2 decimal

Suppose that the probability that a married man votes is 0.45, the probability a married woman votes is 0.4, and the probability a woman votes given that her husband does is 0.6. What is the probability that (a) both vote? (b) A man votes given that his wife does?

John got a mark of 40 on a quiz where the o (standard deviation)= 10, x-bar = 30 and the N=40. His friend Mary got a 35 where the o (S.D) =2, x-bar =32 and N =40. Who go the better mark? Probability and distribution question SCO215 U of M- Flint

A sample of participants took part in a hearingexperiment. Among other things, the absolute hearing threshold (in decibels) wasmeasured for each participant. The measurements were as follows: 25,22,18,35,37,34,31,27,24,21,33,33,33,30,30,30 Draw the histogram for these data using an initial class boundary of and a class width of . Note that you can

Point Estimation: 1. The MSE of an estimator looks a lot like a formula for the variance, although it is not. Explain why the MSE is not the variance - don't simply show that the two formulas differ. Explain what the MSE characterizes, and how this differs from the variance of the estimator in question. 2. Write a couple sentences about how

Part Three: Cumulative Homework An admissions counselor wants to find out if TOEFL scores are predictive of college GPA for international students at a local university. The TOEFL is the Test of English as a Foreign Language, which the school requires for admission, and students can score from 0120, with 120 being a perfect score. The data from

evaluate the integral from 3 to 4 of 5/(3x-2)^2 dx Please explain each step

Find each probability. a.) P(x>20) b.) P(0 27)

1)* Suppose that the reaction times of teenage drivers are normally distributed with a mean of 0.53 seconds and a standard deviation of 0.11 seconds. A) What is the probability that a teenage driver chosen at random will have a reaction time less than 0.65 seconds? B) Find the probability that a teenage driver chosen at random will have a reaction

A salon sells its cologne wholesale for $8.75 per bottle. The variable cost of producing ,X hundred bottle is -3x2+511X-325 dollars

Please answer the following question in ~100 words: Bar graphs and histograms look very similar. In your own words, what is the difference between the two?

Ten percent of the population is left-handed. A class of 1800 students is selected. Convert the binomial probability P(x15) to a normal probability by using the correction for continuity. P(x15.5) P(x14.5) P(x15.5) P(x <14.5)

MA260 Statistical Analysis I Directions: Be sure to save an electronic copy of your answer before submitting it to Ashworth College for grading. Unless otherwise stated, answer in complete sentences, and be sure to use correct English, spelling, and grammar. Refer to the "Assignment Format" page located on the Course Home page for specific format

See PSY315r5_Correlation_Study_Worksheet (3).doc Can anyone make me a scatter plot map with cut off z-score. Based on information only from microsoft words.

\f\f\fOutput: weekly plant output in units Number of Employees: weekly plant employment Average Age of Plant: the average age of the plant's facilities in years Product Mix: variable indicating which of two products (Product A or Product B was produced in the plant that week Shift: variable indicating if output was measured for the day shift or

2 Question text An analysis of the final test scores in this class shows that the scores follow the normal distribution. The mean of the distribution is 75, and the standard deviation is 8. The professor wants to award an A to a student whose score is in the highest 10%, which means 90% of the class will have lower grades. What is the cut-off

Math 012 Quiz 3 Fall 2016 Professor: Dr. Kate Bauer Name________________________________ Instructions: The quiz is worth 50 points. There are 10 problems, each worth 5 points. Your score on the quiz will be converted to a percentage and posted in your assignment folder with comments. This quiz is open book and open notes, and you may take as long

Homework 7 Confidence Intervals, Effect Size, and Statistical Power Complete all analyses in SPSS, then copy and paste your output and graphs into your homework document file. Answer any written questions (such as the text-based questions or the APA Participants section) in the appropriate place within the same file. Part I: Concepts Questions 18

As the owner of a rent-a-car agency you have determined the following statistics: Potential Rentals Daily Probability Rental Duration Probability 0 .10 1 day .50 1 .15 2 day .30 2 .20 3 days .15 3 .30 4 days .05 4 .25 The gross profit is $40 per car per day rented. When there is demand for a car when none is available there is a goodwill loss of

Use the given data set to complete parts(a) through(c) below.(Usealphaequals=0.05.) x 1010 88 1313 99 1111 1414 66 44 1212 77 55 y 9.149.14 8.158.15 8.758.75 8.768.76 9.279.27 8.118.11 6.136.13 3.093.09 9.139.13 7.257.25 4.754.75 b. Find the linear correlation coefficient, r, then determine whether there is sufficient evidence to support the claim

32% of women consider themselves fans of professional baseball. You randomly select six women and ask each if she considers herself a fan of professional baseball. Complete parts (a) through (c) below.(a) Construct a binomial distribution using n=6 and p=0.32. x P(x) 0 nothing 1 nothing 2 nothing 3 nothing 4 nothing 5 nothing 6 nothing

A function T multiplies the input z by and divides that by the quantity . A Write the function equation for B Find Show your work C Find Show your work D Discuss the result you found for part C. How might this be related to the current discussion of Domain and Range.

A laboratory tested 83 chicken eggs and found that the mean amount of cholesterol was 233 milligrams with milligrams. Construct a 95% confidence interval for the true mean cholesterol content, , of all such eggs.

Imagine you have 3 coins in your pocket: 2 coins are fair and have a head on one side and a tail on the other, 1 coin has a head on both sides of the coin. You reach into your pocket, pull out a coin, and place it on the table. You see a head. What is the chance that it is one of the fair coins? What is the process you used to come up with your

Running Head Case: Select Collections Case: Select Collections Webster University Prediction to collect money from delinquent accounts David Cathalina Business Statistics 1 Running Head Case: Select Collections Introduction: My research question will be whether the model is predicting accurately the variable, so that the company might run into

EE 503 Problem Set #7 Due Thursday, October 15, 2015 Fall 2015 Sawchuk ANNOUNCEMENT Friday October 16 - Lecture 16 will be recorded in advance - 3:00 pm-4:50 pm - OHE 132 - please attend live recording if possible - playback at usual time Tuesday October 20 from 10:00 am-11:50 am; TA will be present 7-1 (45) Two random variables X and Y have the

You are in a game show, there are 4 prizes hidden on a game board with 16 spaces. One prize is worth $4000, another is worth $1500, and two are worth $1000. There will be a bill of $50 that you have to pay to the host as a penalty for making a bad choice (not landing on the $4000, $1500 or (2) $1000) What is the probability that you will land on

Lane Ex-15-12 12. What are the two components of the total sum of squares in a one-factor between subjects design? Illowsky 13-61 and 13.62 Use the following information to answer the next three exercises. Suppose a group is interested in determining whether teenagers obtain their drivers licenses at approximately the same average age across the

RSCH 665 - Statistical Analysis

Youre taking a 33 question multiple choice test. Each question has 4 choices. Clueless on 1question, you decide to guess. Whats the chance youll get it right?

A doctor gives a patient a 80% chance of surviving bypass surgery after a heart attack. If the patient survives the surgery, then the patient has a 50% chance that the heart damage will heal. Find the probability that the patient survives the surgery and the heart damage heals. the probability is

Convex geometry 0.1 Dehn-Sommerville relations In this section we will talk about convex polytopes. One possible denition of a convex polytope uses the notion of a half-space: A closed half-space in Rn is the set of points lying on the same side of some hyperplane (this hyperplane is included in the set as well to make it \"closed\"). A little bit

Let f(x)=x^-3 (x-sinx) for x=0. How should f(0) be defined in order that f be continuous? Is it differentiable? Subject:Numerical Analysis: Mathematics ofScientific Computing

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