11. Suppose the average lifetime of a certain type of car battery is known to be 60 months. Consider conducting a two-sided test on it based on a sample of size 25 from a normal distribution with a population standard deviation of 4 months. a) If the true average lifetime is 62 months and a =0.01, what is the probability of a type II error? b) What is the required sample size to satisfy the type II error probability of b(62) = 0.1?
11. Suppose the average lifetime of a certain type of car battery is known to be 60 months. Consider conducting a two-sided test on it based on a sample of size 25 from a normal distribution with a population standard deviation of 4 months. a) If the true average lifetime is 62 months and a =0.01, what is the probability of a type II error? b) What is the required sample size to satisfy the type II error probability of b(62) = 0.1?
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
11. Suppose the average lifetime of a certain type of car battery is known to be 60 months. Consider conducting a two-sided test on it based on a sample of size 25 from a
- a) If the true average lifetime is 62 months and a =0.01, what is the
probability of a type II error?
- b) What is the required
sample size to satisfy the type II error probability of b(62) = 0.1?
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