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Mathematics Questions and Answers March 20, 2021

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Two unfair dice are rolled independently. The rst has 0:5 probability of landing on a 6, with equal probability for the other faces. The second has 0:1 probability of landing on a 1, with equal probability for the other faces. Let X be the sum of the numbers appearing on the two dice, and let Y be the product. Compute the following, leaving your

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The average grade in a statistics course has been 69 with a standard deviation of 12.5. If a random sample of 50 is selected from this population, what is the probability that the average grade is more than 73? UseAppendix B.1for the z -values. (Round the z -value to 2 decimal places and the final answer to 4 decimal places.)

solve the question Refer to Exercise 46. Suppose the distribution of diameter is normal. a. Calculate P(11.99 ju}. But max (X,) = p iff X; Su for all i.] Compute a 97% CI for the true median amount of alanine for infants on such a diet ("The Essential Amino Acid Requirements of Infants," Amer. J. of Nutrition, 1964: 322-330). c. Let x 2) denote
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Which is the correct dosage of administration for loperamide in adults? Group of answer choices 12.5 - 25 mg orally/IM/IV or rectally every 4-6 hours as needed 4 mg orally followed by 2 mg after each unformed stool; do not exceed 16 mg/day 0.6 - 1 mg subcutaneously 25 - 50 mg orally 1 hour before travel for motion sickness

The one-to-one functions g and h are defined as follows. g = ((-5, 5), (1, 7), (4, 3), (8, 4) } h (x ) = -x- 3 7 Find the following. 8 (4) = 1 0O h ( xx ) = 0 X 5 ( hot ] ) (0 ) = 1
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ASSESS Identify the true statement. Question 5 Answer The algebraic expression depends on the moment in time that is defined to be time zero. The algebraic expression does not depend on any definition of a moment called time zero

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Supposep(x,y)=((x^2)*y) / 42 x = 1, 2, 3, y = 1, 2 is the joint pmf of X and Y . Determine P ( Y = 2).

Quin *estuvo hablando por telfono? infinitivo blank. blank hablando por telfono. what is the blanks

Assume that females have pulse rates that are normally distributed with a mean of mu equals =72.0 beats per minute and a standard deviation of sigma equals =12.5 beats per minute . If 16 adult females are randomlyselected, find the probability that they have pulse rates with a mean between 68 beats per minute and 76 beats per minute. The

2. Fill in the following table using the lab introductory material. (Hint: You will need to use the equations and Figure I to complete the table). (5pts) Air temperature ("C) c. (mb) dew point (Td) ( C) e (mb) RH (%) 10 12 67% 15 5 25 22 35 8504
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BUS121 - Ch 10 Worksheet Simple Interest - Practice Problems Follow the directions on each question and be careful to use proper annotation ($ % and round to the nearest hundreth (2 decimal places) and do not use commas in your answers) Simple Interest Basic Equation: 1=PxRxT 1. Determine the interest paid given the terms. Use $ sign and round to

Determine whether the system is consistent. X1 + 3X2 + 2x3 = 11 4x2 + 9X3 = -12 X1 + 7X2 + 11x3 =-11 Yes No
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Use the computer output to estimate the interceptB0and the slope B1. The regression equation is Y=27.4+4.82X Predictor Coef SE Coef T P Constant 27.432 5.925 4.63 0.000 X 4.824 0.7265 6.64 0.000 InterceptB0: = SlopeB1:=

Problem 1 3 -2 For a given matrix A = -1 0 is matrix A diagonalizable? If yes, diagonalize the matrix; 1 -1 otherwise, give the Jordan form. Show detailed steps to solve the
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Compute the probability for a random variable X with =10 and =2. Calculate P(X <14).

a) A population consist of N=5 numbers 5, 9, 13, 15, 17. Draw all possible samples of size n=3 with replacement from the population and find the sample means. Construct the sampling distribution of sample means and verify your results

The amount of water that flows through major ocean currents is measured in a unit that equals 1 million cubic meters per section. That unit is called The amount of water that flows through major ocean currents is measured in a unit that equals 1 million cubic meters per section. That unit is called Triton Sverdrup Nansen Dyne

Indicate whether the following statements are true or false (T or F). For false statements, rewrite the statement on the line below to make the statement true. 2. An independent laboratory is accredited to test and evaluate patient specimens free from a hospital or private practice

rational for the objective: By the end of the semester, Jack will independently button and unbutton a shirt with small buttons within 5 minutes, with 90% accuracy, on 4 out of 5 trials, as measured by teacher observation and a fine motor skills checklist

Show that fitting a locally constant multinomial logit model of the form (6.19) amounts to smoothing the binary response indicators for each class separately using a Nadaraya-Watson kernel smoother with kernel weights K(x0, xi). From text book : The Elements of Statistical Learning: Data Mining, Inference, and Prediction, Second Edition

In the following linear programming problem, what is the allowable increase for the objective function coefficient for variable x? (Mote: This problem requires Solver) Maximize P = 2x + 18y Subject to: 2x + 4y
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1. 2-D Density Tasks. If f(x,y) = 2ey, 0xy, >0 0, else \f
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Bad gums may mean a bad heart. Researchers discovered that 85% of people who have suffered a heart attack had periodontal disease, an inflammation of the gums.Only 30% of healthy people (no heart attack) have periodontal disease.Suppose that in a certain community, heart attacks are quite rare, occurring with only 10% probability.If someone has

A 33% trade discount on a camera represents a discount of $217.80 from the suggested retail price. What is the net price to the buyer? (Do not round intermediate calculations and round your final answer to 2 decimal places.)

You run K-means clustering on your dataset with K = 5 and get some result. Your coworker takes the same dataset, runs K-means clustering with K = 5 on her computer as well but gets a dierent result. How can this be possible, and what is one way to decide whose clustering result is better?

Discuss the difference between a partial equilibrium analysis and a general equilibrium analysis. Illustrate using examples for each.

Assume that hybridization experiments are conducted with peas having the property that foroffspring, there is a 0.25 probability that a pea has green pods. Assume that the offspring peas are randomly selected in groups of 26. a. Find the mean and the standard deviation for the numbers of peas with green pods in the groups of 26. The value of the

20 (5 points) Title:AlgwFin-U7-Test-Std14-60 Wayne scored 78, 87, 65, 84, 90, 85, 78, and 50 on his history tests. Find the mean of the set of data. Round your answer to the nearest whole number. a 81 b 84 c 77 d 78

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Can you help out with these questions? I'm having trouble with these. Score on last try: 4.33 of 13 pts. See Details for more. You can retry this question below A researcher conducted an Independence test by using data consisting of 2 categorical variables: Zip code and Diet. Her data can be organized into a 3 by 2 contingency table. If she found
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Below is a table indicating the correlation between a screening technique (test) and the true disease status (positive or negative). Disease Positive Disease Negative Total Test Positive 8 27 35 Test Negative 2 63 65 Total 10 90 100 I need the following values: (please show your work) i)Sensitivity of the test (%) ii)False positive rate (%)

Science can be described as which of the following? a set of practices a set of ideas a way of thinking all of the above

The math scores on the SAT for applicants in a certain college are normally distributed with a standard deviation of 35 and mean of 680.Suppose that only applications with a score of 700 or above are considered for admission.What are the scores of applicants in the bottom 10 percent?

science | IT... DG Object Oriented Pr... 1G My orders Metal Gear Solid 1.,, Apporto | App and... .Oop assignment | 1... Calorie Calculator -.. / 2019 Form 2962 & Order N Education Help Configure. Project Index (static) @ Configure.. BACKUP_MO... 0 . codio. iootebooks/BACKUP_Module Six Discussion. ipynb Jupyter BACKUP_Module Six Discussion Last
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In a Gallup poll of 1230 randomly selected adults, 781 said that they were underpaid. Construct a 90% confidence interval estimate for the proportion of adults who say they are underpaid.

CAN YOU HELPP ME WITH MY HOMEWORK NOT for TUTOR: dont submit if you dont do full THEM OR BAD RATE And in full explanation show all your work Solve the following system of nonlinear equations:x^2 + y^2 = 9 x^2 - y^2 = 1 Find the maximum value of the function f(x,y) = 3x^2 + 2xy + y^2 subject to the constraint x + y = 6. Evaluate the definite

An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots weighing between 150 lb and 211 lb. The new population of pilots has normally distributed weights with a mean of 159lb and a standard deviation of 33.7lb.If a pilot is randomlyselected, find the probability that his weight is between 150 lb and 211

his expression is one side of an equation: (Valuet - Valuet -1 + Cash Flowt) / Valuet-1 What does the expression calculate

The velocity function is v(t)=t 2 +3t-2 for a particle moving along a line. Find the displacement and the distance traveled by the particle during the time interval [3,6]. displacement =__________? distance traveled =__________?

It is known that the length of a certain product X is normally distributed with = 20 inches. How is the probability P(X> 16 ) related to P(X < 16 )?

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If personal autonomy and job satisfaction share a positive relationship, this suggests that they Nary up and down together. Dvary inversely share a spurious relationship Ovary together if they are increasing, but vary inversely if one is decreasing Dhave no causal relationship

Please help with question 44 please. Please answer and explain! Thank you! 44. A random sample of 100 adults, aged [8 to 50, was grouped by age and number of current tattoos. The results are listed in the table below. A_e 13-29 _ A_e 30-50 If a person is selected at random from the 100 adultS, nd: a. The probability he/she is age 30-50 and has at
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Hello students, I am sure that many of you use outside resources such as videos or websites to help you with this course. Please post a website or video link that helped you so far in the course. State what you found helpful about the website and why you would recommend it to others in this course. Be sure to include the link to the website or

Academic advising: In 2014, the Community College Survey of Student Engagement reported that 32% of the students surveyed rarely or never use academic advising services. Suppose that in reality, 42% of community college students rarely or never use academic advising services at their college. In a simulation we select random samples from this

In a simple random sample of 1600 people age 20 and over in a certaincountry, the proportion with a certain disease was found to be 0.155 (or 15.5%). What is the standard error of the estimate of the proportion of all people in the country age 20 and over with thedisease?

The mean salary Offered to students who are graduating from coastal State University this year is 24,275 with a standard deviation of 3643 random sample of 75 per state students graduate this year and said it was the probability that the mean selling off these students is 23,500 or more ?

Why use ANOVA when you could just run many sets of t-tests? [Think about practical considerations, as well as statistical considerations.]

By considering the intervals In := (0, 1/n) for n N, show that the conclusion of the nested interval theorem may fail if we do not work with closed intervals

CYU#1: Convert 35 miles per gallon to kilometers per liter using the given conversions below. 35mpg=___ km/L (round to 2 decimal places) Note the following: 1 gallon = 3.79 liters 1.06 quarts = 1 liter 1 gallon = 128 ounces 1 mile = 1.6 kilometers 1 kilometer = 1000 meters 1 mile = 5280 feet
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Maria has a 30-minute work break. During the break, she'll walk 3 minutes to another floor, say hello to 4 friends spending equal time with each, and walk back for 3 minutes. How long can she spend with each friend? 5 minutes 7 minutes U 4 minutes 6 minutes

A theory is based on ________. Group of answer choices Repeated observations that allow scientists to make generalizations Ideas and opinions about the way things work Mathematical formulas only Separate ethnographic accounts

A consumer agency wants to estimate the proportion of all drivers who wear seat belts while driving. What is the most conservative estimate of the sample size that would limit the margin of error to within0.16of the population proportion for a99%confidence interval? Round your answer up to the nearest whole number. n=

Consider the following data set that has a mean of 4: 2, 3, 4, 4, 7 Using the equation below or the standard deviation formula in Excel, calculate the standard deviation for this data set. Answer choices are rounded to the hundredths place. n E(x,-X) n -1 E
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A discrete random variable x can assume five possible values: 2, 3, 5, 8, 10. Its probability distribution is shown below. Find the standard deviation of the distribution. \f
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Identify the domain and then graph the function, using the table to the right. 900 : 31/x 1 w The domain of the function g(x) is [1 (Type your answer in interval notation.) Complete the table to the right. Graph the function. Choose the correct graph to the right
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A rowing team consists of four rowers who weigh 18, 24,and 36 pounds. Find all possible random samples with replacement of size three and compute the sample mean for each one. Use them to find the sampling distribution of the sample mean. Also verify the results.

The mean amount of life insurance per household is $111 000. This distribution is positively skewed. The standard deviation of the population is $39 000. Use Appendix B.1 for the z values. a. A random sample of 40 households revealed a mean of $115 000. What is the standard error of the mean? (Round the final answer to the nearest whole number.)

A study claims that the mean age of online dating users is 40 years.Some researchers think this is not accurate and want to show the mean age is not 40 years.

1.The experiment proceeded as normal, with the experimental group hearing about the potential presence of a gun as the confederates left the study and the control group not hearing about the gun. Unfortunately, hearing about the possible presence of a gun frightened some of the experimental participants, who did not show up for the second

Why is it important that teachers understand the difficulties in math that students face? Question 1 options: To ensure students receive appropriate, timely and intensive instruction. To assist students in transferring mathematical skills from elementary to high school. To develop problem solving skills early. To understand that problems begin in

ind the indicated derivative and simplify. y prime for y equals StartFraction log Subscript 9 Baseline x Over 5 plus x Superscript 9 EndFraction

you have a 50% disinfectant solution and a 40% disinfectant solution. How many gallons of each solution should be mixed to make 25 gallons of a 46% disinfectant solution

How important is a teacher's knowledge of Mathematics to the design and differentiation of instruction?

What makes it easier to teach the standard algorithm? Group of answer choices The repeated exposure in elementary school. Not delaying the teaching of the standard algorithm. Manipulatives are not required. The understandings students gain from working with reasoning strategies makes

A state Department of Transportation claims that the mean wait time for various services at its different location is more than 6 minutes. A random sample of 16 services at different locations has a mean wait time of 9.5 minutes and a standard deviation of 7.3 minutes. At =0.05, can the department's claim be supported assuming the population is

First-Price Sealed-Bid auctions have all bidders simultaneously submit sealed bids so that no bidder knows any of the other bids. The winner faces the "Winner's Curse" problem if the auctioned item's value is not known with certainty. True or False? Select one: a. False b. True

Describe how the Test for Independence and correlation are similar yet different? Compare the goodness of fit test and the test for Independence in terms of the number of variables and levels of those that can be compared. In what ways are they similar or different? The Goodness of Fit Test and Test for Independence both use the same formula to

is the numberoffishcaughtduringafishingtournament a discrete randomvariable, a continuous randomvariable, or not a randomvariable?

4. 3 points Find the interquartile range of X. (Recall that the interquartile range is the difference between the third quartile q3 and the first quartile q1)
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Prove the following facts about the identity transformation I : V - V. 1. If S : U - V is linear then IS = S. 2. If T : V - W is linear then TI = T. And finally, check carefully whether the compositions SI and IT are defined
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Jessica purchased a car using a 4-year car lease at 7.20% compounded quarterly that required her to make payments of $716 at the beginning of each month. Calculate the cost of the car if she made a down payment of $1,000. Round to the nearest cent

Sums of Random Variables Suppose that X is a continuous random variable with pdf fx(x) = he-2pel 2 for -oo
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In 2008, there were 507 children in Arizona out of 32,601 who were diagnosed with Autism Spectrum Disorder (ASD; Autism and developmental , 2008). Find the proportion of ASD in Arizona with a confidence level of 99%. (8.2.6)

The weights of a certain dog breed are approximately normally distributed with a mean of 52 pounds, and a standard deviation of 6.6 pounds. Answer the following questions. Answers in percent form. Round your answers to the nearest tenth of a percent. a) Find the percentage of dogs of this breed that weigh less than 52 pounds.____% b) Find the

The Nanogene founders should at least be comfortable that, given the $10 million raised in the series A round, there should be no further dilution to their equity positions in subsequent rounds: Group of answer choices True False

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Plz emergency need. Left- 30 minit. my Exam Is running. plz QZ. (a) Let s, - 1+ Prove that lim s, exists and lies between 2 and 3. 21 3! (b) It s, = + , show that (s,] converges. /7+1 7+ 2
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I need help with the questions below. I have already answered them and need to know if you think I should revise them. The following is weight in pounds of a random sample of professional football players: Dallas Cowboys 250 255 255 264 250 265 245 252 266 246 251 263 248 228 221 223 220 Green Bay Packers 260 271 258 263 267 254 255 250 248 240

5. Find the scalar equation of the plane that contains the intersecting lines: 1 : [x, y, z] = [-1, 1, -1] + s[2, 3, -1] and 12 : [x, y, z] = [-1, 1,-1] + ( [ 1, -3, 2]
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Compute the range and sample standard deviation for strength of the concrete(in psi). 3940 4130 3400 3000 2940 3820 4130 4020

This is complex variable. I am returning student, so in detailed explanation please. Thank you. Problem 3. Prove: if f has a pole of order k at zo, then dk-1 Res( f. zo) = lim (k - 1)!= zo dzki ( 2 - 20 ) * f ( 2 )
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Industrial quality control programs often include inspection of incoming materials from suppliers. If parts are purchased in large lots, a typical plan might be to select20 partsat random from a lot and inspect them. Suppose that a lot is judged acceptable if one or fewer of these 20 parts are defective parts. If more than one part is defective,

35. Know EMDR AND PTSD -know what happens in each zone to the body. 36. Know what schism coalition is, know triangulation. skewed coalition
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What is the sampling method used in the following scenario? A woman in at a daycare is handing out questionnaires to parents asking them to evaluate the daycare's service. She does not ask parents who are who's children are crying or running late but instead asks all parents who are standing near the front door patiently waiting for their children

quiz : Summary - Quiz 2 - Module 2 all 10 questions which of the following is a disadvantage of selling a standardized product or service?

What selection will minimize the most susceptibility on the image? 1 Point Short TE Large matrix Wither receiver bandwidth Short TE Small matrix Wither receiver bandwidth Long TE Small matrix Wither receiver bandwidth Short TE Small matrix Narrow receiver bandwidth

Suppose that the functions g and h are defined as follows. g (x)=x+1 h (x) = (x -6)(x+2) (a) Find g ) ( - 4 ). (b) Find all values that are NOT in the domain of h If there is more than one value, separate them with commas
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U and V are mutually exclusive events. P(U)=0.34 ; P(V)=0.32 Find P ( U or V ) =

The ratio of consumer liabilities to consumer financial assets rose from just over 10% in 1950 to more than 30% in 2009. However, recent researches points to a number of factors that bear on the consumer's decision of when and how much to borrow. Leading the list is the size of individual income, meaning that families with higher income tend to

Consider the following function. f(x)=10x^27x11+ln(x) Find all possible inflection points in (x,f(x)) form. Write answer in its simplest form or as a decimal rounded to the nearest thousandth. (If necessary, separate your answers with commas.)

The tires of your car have a life span of 40,000 miles and an estimated standard deviation of 1,500 miles. Assume the life of your tires is normally distributed Find the probability that the tires will last more than 42,000 miles Find the probability that the tires will last less than 38,200 miles How many miles will the top 10% of the tires

N Calculate (5x+ x2) dx, given the following. 2 N x 2 dx = 19 x2 dx = xdx = N/ W 3 2 N (5x + x2) dx = 0 (Type an integer or a simplified fraction.)
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Anecdotal records are: O records students keep to evaluate a teacher's explanation of concepts. O records parents share with teachers about their children's backgrounds in mathematics. O verbal accounts of students' work. O written notes about what a student did and said

Suppose the joint PDF for random variables X and Y is f X, Y ( x , y ) = 36 x 3 y 4 for 0 x y and 0 y 1 and is zero otherwise, calculate E (2X 2 Y)

29. is a technique that attempts to determine the relative importance consumers attach to salient attributes and the utilities they attach to the levels of attributes. A. Discriminant analysis B. Regression C. MANOVA D. Conjoint analysis E. Factor analysis
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