A machine that produces ball bearings is set so that the average diameter is 0.47 inch. A sample of 10 ball bearings was measured with the results shown below.

Assuming that the standard deviation is 0.06 inch, can we conclude at the 8% significance level that the mean diameter is not 0.47 inch?

A. The value of the standardized test statistic:

Note: For the next part, your answer should use interval notation. An answer of the form is expressed (-infty, a), an answer of the form is expressed (b, infty), and an answer of the form is expressed (-infty, a)U(b, infty).

B. The rejection region for the standardized test statistic:

C. The p-value is

D. Your decision for the hypothesis test:





In order to get credit for this problem all answers must be correct.