Question

H0: __________

Short answer

The value of$H_0:{\sigma }^2\le 150$

Step-by-step solution

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 than$150$ 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 is$22$ minutes with a standard deviation of $15$ minutes.

Explanation

The null hypothesis is shown below:

$H_0:{\sigma }^2\le 150$

that is , the variance is no more than $150$.