Suppose a bowler claims that her bowling score is less than116

points, on average. Several of her teammates do not believe her, so the bowler decides on a hypothesis test, at a5%

significance level, to persuade them. She bowls25

games. The mean score of the sample games is103

points. The bowler knows from experience that the standard deviation for her bowling score is19

points.

• H
• 0
• :116
• ;H
• a
• :<116
• =0.05
• (significance level)

What is the test statistic (z

-score) of this one-mean hypothesis test, rounded to two decimal places?