Question: GRE performance A test preparation company claims that more than 50% of the students who take their GRE prep course improve their scores by at

GRE performance A test preparation company claims that more than 50% of the students who take their GRE prep course improve their scores by at least 10 points.

a) Is the alternative to the null hypothesis more naturally one-sided or two-sided? Explain.

b) A test run with randomly selected participants gives a P-value of 0.981. What do you conclude?

c) What would you have concluded if the P-value had been 0.019?

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