Hi there!

I have a problem with stating the right Hypothesis Test for the following problem (chi-squared test):

“A study was conducted to determine whether the standard deviation of monthly maintenance costs of a Pepper III aircraft is $300.”

The **correct** statement is:

- H0: pop. variance = 300^2
- Ha: pop. variance =/ 300^2

However, when I read the problem, I **was sure** that Ha: pop. variance = 300^2. The solution says that the wording is a little tricky, but it does not explain how I am supposed to interpret it… **Could you guys explain me the right way to interpret the wording of the problem?** Thank you so much!