1) A statistics professor is examining if using the book in his class has any impact...

1) A statistics professor is examining if using the book in his class has any impact on student test scores. For a sample of 30 Statistics students who were required to buy and read the book for class, final semester grades were measured at the end of the semester. The mean final grade for this class was 87. If the mean final grade for all the previous classes (where students had not been required to use the book) was 83 with a standard deviation of 5, can the professor conclude that using the textbook changes students’ grades significantly? (Set the alpha level at .05)

a. Complete all steps of the hypothesis test to test the null hypothesis.

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orchestra answered 1 year ago

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