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Chapter 11: Q.112 (page 668)

H0: __________

Short Answer

Expert verified

The value ofH0:蟽2鈮�150

Step by step solution

01

Given information

Given in the question that, Suppose an airline claims that its flights are consistently on time with an average delay of at most 15 minutes. It claims that the average delay is so consistent that the variance is no more than150 minutes. Doubting the consistency part of the claim, a disgruntled traveler calculates the delays for his next 25 flights. The average delay for those 25 flights is22 minutes with a standard deviation of 15 minutes.

02

Explanation

The null hypothesis is shown below:

H0:蟽2鈮�150

that is , the variance is no more than 150.

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