Barron's reported that the average number of weeks an individual is unemployed is 16.5 weeks. Assume that for the population of all unemployed individuals the population mean length of unemployment is16.5 weeks and that the population standard deviation is five weeks. Suppose you would like to select a sample of 50 unemployed individuals for a follow-up study.(a) Show the sampling distribution of X, the sample mean average for a sample of 50 unemployed individuals.-2.1 -1.4 -0.7 0 0.7 1.4 2.114.4 15.1 15.8 16.5 17.2 17.9 18.6weeksweeks47.9 48.6 49.3 50 50.7 51.4 52.1weeks1.5 6.5 11.5 16.5 21.5 26.5 31.5weeks(b) What is the probability that a simple random sample of 50 unemployed individuals will provide a sample mean within one week of the population mean? (Round your answer to four decimal places.)(c) What is the probability that a simple random sample of 50 unemployed individuals will provide a sample mean within week of the population mean? (Round your answer to four decimal places.)2

Let X be the number of weeks an individual is unemployed.Given that the average number of weeks an…

Answered: Barron's reported that the average…

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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Suppose the systolic blood pressure (in mm) of adult males has an approximately normal distribution with mean μ =125 and standard deviation σ =14. Create an empirical rule graph with the following: A title and label for the horizontal axis including units. Vertical lines for the mean and first 3 standard deviations in each direction with numerical labels on the horizontal axis Labels for the areas of the 8 regions separated by the vertical lines as well.
I wanted to test if the mean Exam 3 score in this course was different than the mean Exam 2 score. To conduct this test I used the 30 students in my course last semester as my sample. I first calculated the difference in scores between Exam 2 and Exam 3 ("Exam 2 score - Exam 3 score"). The sample mean of these differences is 2.0 and the sample standard deviation of the differences is 3.0. What is your decision for this test? Group of answer choices 1. Reject the null hypothesis 2. Retain the null hypothesis
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