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Question Emma, a golfer, claims that her drive distance is less than175 meters, on average. Several of her friends do not believe her, so she
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Emma, a golfer, claims that her drive distance is less than175
meters, on average. Several of her friends do not believe her, so she decides to do a hypothesis test, at a1%
significance level, to persuade them. She hits17
drives. The mean distance of the sample drives is156
meters. Emma knows from experience that the standard deviation for her drive distance is19
meters.
- H
- 0
- :175
- ;H
- a
- :<175
- =0.01
- (significance level)
What is the test statistic (z
-score) of this one-mean hypothesis test, rounded to two decimal places?
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