Question: A composition teacher wishes to see whether a new grammar program will reduce the number of grammatical errors her students make when writing a two-page

A composition teacher wishes to see whether a new grammar program will reduce the number of grammatical errors her students make when writing a two-page essay. The data are shown here. At Î± = 0.025, can it be concluded that the number of errors has been reduced?

a. State the hypotheses and identify the claim.
b. Find the critical value(s).
c. Compute the test value.
d. Make the decision.
e. Summarize the results.

Student Errors before Errors after 9 1 234 5 6 12 9 05 4 3

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