What is the sample mean difference

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A golf instructor is interested in determining if her new technique for improving players' golf scores is effective. She takes four new students. She records their 18-hole scores before learning the technique and then after having taken her class. She recruits you to conduct a hypothesis test. The data from the matched samples are as follows:

Player 1 Player 2 Player 3 Player 4
Mean score before class 83 78 93 87
Mean score after class 80 80 86 86

a. State the null and alternative hypotheses.

b. What is the sample mean difference?

c. At α(alpha) = 0.05, what conclusion can you draw about the new technique?

Reference no: EM132976351

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