Answered: According to the Bureau of Labor and…

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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Question

According to the Bureau of Labor and Statistics Department, the average duration of unemployment in the U.S. was 22.9 weeks in April 2019. Assume that the standard deviation for this population is 10.2 weeks. A random sample of 36 unemployed adults in the U.S. was selected. What is the probability that the average duration of unemployment was between 21 and 24 weeks?

2. As per BBC, 20.4% of Virgin Atlantic Airways flights were late (arrived or departed 15 minutes late or more). A random sample of 140 random Virgin Atlantic Airways was selected. What is the probability that 35 or fewer flights from this sample were late?

3. Suppose a convenience store averages 450 customers per day entering the store with a standard deviation of 96 customers. A random sample of 36 days was selected. What is the probability that the average number of customers per day entering the store in the sample is between 410 and 470 customers?

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