The average price of a college math textbook is $178 and the standard deviation is $24.Suppose that 6 textbooks are randomly chosen.Round all answers to 4 decimal places if necessary.a. What is the distribution of x?b. For the group of 6, find the probability that the average price is between $176 and $187.c. Find the first quartile for the average textbook price for this sample size. $(round to thenearest cent)

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Answered: The average price of a college math…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The average price of a college math textbook is $162 and the standard deviation is $27. Suppose that 10 textbooks are randomly chosen. Round all answers to 4 decimal places where possible. a. What is the distribution of ? ~ N( b. For the group of 10, find the probability that the average price is between $161 and $167. c. Find the 95th percentile for the average textbook price for this sample size. $ (round to the nearest cent) d. Find the 95th percentile for an individual textbook price. (round to the nearest cent) $ e. For part b), is the assumption that the distribution is normal necessary? YesO No
Calculate the standard score (z-score) of the given sample mean. Round your answer to two decimal places. u = 23 and o = 7; n = 72; ī = 22
Please answer B, C, & D.
Refer to the accompanying table, which describes results from groups of 8 births from 8 different sets of parents. The random variable x represents the number of girls among 8 children. Find the mean and standard deviation for the number of girls in 8 births. Click the icon to view the data table. The mean is u= girl(s). (Round to one decimal place as needed.) The standard deviation is o = e# girl(s). (Round to one decimal place as needed.) Table of numbers of girls and probabilities Number of Girls x 0 1 2 3 4 5 6 7 8 átv P(x) 0.004 0.034 0.117 0.218 0.278 0.217 0.102 0.027 0.003 D - X NiZ Next
Please answer B, C, and D.
Find the range, the standard deviation, and the variance for the givien samples. Round non integer results to the nearest tenth. 2 ,6,8,10,12,15,17
Please solve
Consider sample data with x = 39 and s = 4.Compute the coefficient of variation. Round to two decimal places. ?%
Use the Central Limit Theorem to find the mean and standard error of the mean of the indicated sampling distribution. The monthly rents for studio apartments in a certain city have a mean of $1,040 and a standard deviation of $200. Random samples of size 60 are drawn from the population and the mean of each sample is determined. Round the answers to the nearest hundredth. OA. $134.26, $200.00 ry OB. $134.26, $25.82 OC. $1,040.00, $3.33 ns OD. $1,040.00, $25.82 15 2 4+ to 144 A41 Insert prt so → ( P 2 @ 2 W S X 3 E D 14101 $ C 4 R F % 5 T 40 6 G V B Y 4- & H 7 U N 00 8 J 1 M 9 K ► 11 ) O O L { alt + [ ? = 1 1 backs
Suppose six pet food stores in the area were surveyed, and the following data shows how many types of pet food each of them carries. 7,7,9, 9, 11, 11 Calculate the sample mean and the sample standard deviation. Round your answers to three decimal places. T = Number Number S=
Which of the two samples in each set has the higher standard deviation. Answer this question by looking at the data without any computation. Explain your reasoning for each answer. Set 1 – Sample A: 16, 16, 16, 16, 16 – Sample B: 20, 20, 20, 20, 20 Set 2 – Sample A: 16, 16, 16, 16, 16 – Sample B: 15, 16, 16, 16, 16 Set 3 – Sample A: 20, 25, 25, 25, 30 – Sample B: 15, 25, 25, 25, 35 Set 4 – Sample A: 20, 20, 30, 40, 40 – Sample B: 20, 25, 30, 35, 40
Please answer A, B, & C.

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