Question

We want to test if mean reaction time to a visual stimulus for people with diabetes...

We want to test if mean reaction time to a visual stimulus for people with diabetes is less than 400 milliseconds (the known mean for people free of this disease). To address this question, we measure reaction time for a sample of 36 people with diabetes.

Write the null and alternative hypotheses

Write the rejection region

A one-sample t-test was done using SAS; edited results are below. Using this information, give the decision of the test, and explain how you reached this decision.

N

Mean

Std Dev

Std Err

Minimum

Maximum

36

395.2

41.8046

6.9674

316.0

481.0

DF

t Value

Pr < t

35

-0.69

0.2462

Interpret the result of the test.

How is the p-value of .2462 obtained in this problem? That is, what area

does this represent?

Math   Statistics-And-Probability   
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