Below is a hypothesis test set up by a student who recently

Below is a hypothesis test set up by a student who recently took introductory statistics:

Ho: x = 5

Ha: x ? 5

The sample mean of 100 cases used to implement the hypothesis test is x = 4.2

Which of the following statements is accurate?

This is a one-sided hypothesis test.

There is an error in how these hypotheses were constructed.

It would be reasonable to swap

Solution

H0: x bar =5

Ha: xbar <5

n = sample size = 100

It would be reasonable to swap