The average price of a college math textbook is $171 and thestandard deviation is $28. Suppose that 50 textbooks arerandomly chosen. Round all answers to 4 decimal placeswhere possible.a. What is the distribution of x? ¤ - N(|b. For the group of 50, find the probability that theaverage price is between $174 and $176.c. Find the third quartile for the average textbook pricefor this sample size. $(round to the nearestcent)d. For part b), is the assumption that the distribution isnormal necessary? O YesO No

Answered: Image /qna-images/answer/6832b3f9-a5f5-47a6-b953-910b159b6553.jpg

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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Calculate the standard score (z-score) of the given sample mean. Round your answer to two decimal places. μ=49 and σ=12; n=46; x¯=52
= 2 = 3 6. 7 10 For a large, top-rated corporation, 99% of employees said the corporation is a great place to work. Suppose that we will take a random sample of 8 employees. Let p represent the proportion of employees from the sample who said the corporation is a great place to work. Consider the sampling distribution of the sample proportion p. Complete the following. Carry your intermediate computations to four or more decimal places. Write your answers with two decimal places, rounding if needed. (a) Find ua (the mean of the sampling distribution of the sample proportion). (b) Find on (the standard deviation of the sampling distribution of the sample proportion).
Construct a probability distribution for the sum shown on the faces when two dice, each with 8 faces, are rolled. 1. Find the mean. Round your answer to one decimal place as needed. Do not round intermediate steps. 2. Find the variance and standard deviation.
a.Consider the data set. 2, 3, 5, 8, 9 Compute the population standard deviation. (Round your answer to two decimal places.)? =? b.Consider the data set. 2, 4, 5, 6, 7 Compute the sample standard deviation. (Round your answer to two decimal places.)s = ? c.Consider the data set. 2, 3, 5, 6, 7 Find the range.
Please a, b and c
DIRECTION: Read and answer the following questions. Write the letter of your choice on the spaces provided before each number. (Remembering) 1. The frequency distribution of sample means taken from a population. A. sampling distribution of sample means B. mean C. variance D. histogram 2. It is also called the expected value. A. sampling distribution of sample means B. mean C. variance D. histogram 3. It states that the sampling distribution of the mean approaches a normal distribution as the sample size increases. A. Central Limit Theorem B. standard error of the mean C. normal distribution D. sample size 4. The population is spread perfectly symmetrical with standard deviations around the mean value. A. population B. Central Limit Theorem C. sample size D. normal distribution えー! 5. In the formula Z = represents : Vn A. sample mean B. variable C. population mean D. standard deviation 6. It is the standard deviation of the sampling distribution of the sample mean. "B. standard…
find the p value and explain how it is done.
The p-value is which? the same as the z statistic. a sample statistic. a probability. a distance.
The distribution of the number of hours that a random sample of people spend doing chores per week is shown in the pie chart. Use 32 as the midpoint for "30+ hours." Make a frequency distribution for the data. Then use the table to estimate the sample mean and the sample standard deviation of the data set. W Click the icon to view the pie chart. ..... 5-9 12 10-14 23 15-19 16 20-24 18 25-29 12 30+ 4 Find an approximation for the sample mean. x= 16.6 (Type an integer or decimal rounded to the nearest tenth as needed.) Find an approximation for the sample standard deviation. s= (Type an integer or decimal rounded to the nearest tenth as needed.)
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
Help please.
English Philippines) e to search Given Samples A and B below, Sample A: Sample B: Sample A: - 3.2 4.6 Sample B: - a. Calculate the mean and standard deviation for each sample. 2.1 2.6 Sample B: CV- 0.00 0.00 4.5 4.5 2.0 3.2 3.6 2.8 SA 0.00 96 50 11 b. Calculate the coefficient of variation for each sample. Sample A: CV. - 0.00 % E Round to two decimal places if necessari c. Which sample is more variable? 0.00 0.00 2.6 3.1 Sample A Sample B Neither sample is more variable than the other 3.8 4.1 3.8 4.9 3.5 4.6 land I

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