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Perform the following: state the hypotheses and identify the claim. find the critical values c. compute the test value d. make the decisions....

Perform the following:
a. state the hypotheses and identify the claim.
b. find the critical values
c. compute the test value
d. make the decisions.
e. summarize the results.

Incoming first year students at a particular college are required to take a mathematics placement exam. As an experiment, six randomly selected students are given the exam, and then they participate in a 3 hour refresher class. These six students are then given a retest. Is there sufficient evidence at the 0.05 level of significance that the refresher class helped? Assume that the variable is normally distributed.

Student 1 2 3 4 5 6
Before 10 16 12 12 18 20
After 12 15 15 12 17 20

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CH200410_473555_STAT.xls

Incoming first year students at a particular college are required to take a mathematics placement exam. As an experiment, six randomly
selected students are given the exam, and then they...

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