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

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Statistics

2. The inside diameters of bearings used in anaircraft landing gear assembly are known to
have a standard deviation of s = 0.002 cm. A random sample of 15bearings has an
average inside diameter of 8.2535 cm.
a. Test the hypothesis that the mean inside bearing diameter is8.25 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 meanbearing 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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