# Question

We ask whether a new version of our textbook is beneficial or detrimental to students learning statistics. On a national statistics exam, µ = 68.5 for students using other textbooks. A sample of students using this book has the following scores:

64 69 92 77 71 99 82 74 69 88

(a) What are H0 and Ha for this study?

(b) Compute tobt.

(c) With a = .05, what is tcrit?

(d) What do you conclude about the use of this book?

(e) Compute the confidence interval for µ.

64 69 92 77 71 99 82 74 69 88

(a) What are H0 and Ha for this study?

(b) Compute tobt.

(c) With a = .05, what is tcrit?

(d) What do you conclude about the use of this book?

(e) Compute the confidence interval for µ.

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