Question

In: Statistics and Probability

2. The inside diameters of bearings used in an aircraft landing gear assembly are known to...

2. The inside diameters of bearings used in an aircraft landing gear assembly are known to
have a standard deviation of s = 0.002 cm. A random sample of 15 bearings has an
average inside diameter of 8.2535 cm.
a. Test the hypothesis that the mean inside bearing diameter is 8.25 cm. Use a two-
sided alternative and a = 0.05.
b. Find the P-value for this test.
c. Construct a 95% two-sided confidence interval on the mean bearing diameter
d. Repeat (a,b,c) above for a = 0.1. Compare with results for a = 0.05.
e. Repeat (a,b,c) above for a = 0.01. Compare with results for a = 0.05.

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orchestra answered 11 months ago
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