On weeknights, the average number of hours of sleep per night for adults 55-84 years old is 7.0. Assume this random variable follows a a. What is the probability that a randomly selected adult from this age group will get 1. less than 6.0 hours of sleep tonight? 2. more than 4.0 hours of sleep tonight? 3. between 6.3 and 9.0 hours of sleep tonight? 4. between 5.6 and 6.7 hours of sleep tonight? b. How many hours of sleep will an adult in this age group get if they are in the 20th percentile? a. 1. The probability is (Round to four decimal places as needed.) normal distribution with a standard deviation of 1.3 hours.

On weeknights, the average number of hours of sleep per night for adults 55-84 years old is 7.0. Assume this random variable follows a a. What is the probability that a randomly selected adult from this age group will get 1. less than 6.0 hours of sleep tonight? 2. more than 4.0 hours of sleep tonight? 3. between 6.3 and 9.0 hours of sleep tonight? 4. between 5.6 and 6.7 hours of sleep tonight? b. How many hours of sleep will an adult in this age group get if they are in the 20th percentile? a. 1. The probability is (Round to four decimal places as needed.) normal distribution with a standard deviation of 1.3 hours.

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

On weeknights, the average number of hours of sleep per night for adults 55-84 years old is 7.0. Assume this random variable follows a normal distribution with a standard deviation of 1.3 hours.
a. What is the probability that a randomly selected adult from this age group will get
1. less than 6.0 hours of sleep tonight?
2. more than 4.0 hours of sleep tonight?
3. between 6.3 and 9.0 hours of sleep tonight?
4. between 5.6 and 6.7 hours of sleep tonight?
b. How many hours of sleep will an adult in this age group get if they are in the 20th percentile?
a. 1. The probability is.
(Round to four decimal places as needed.)
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