The diameters of aluminum alloy rods produced on an extrusion machine are known to have a...

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The diameters of aluminum alloy rods produced on an extrusionmachine are known to have a standard deviation of 0.0001 in. Arandom sample of 25 rods has an average diameter of 0.5046 in.

(a) Test the hypothesis that mean rod diameter is 0.5025 in.Assume a two-sided alternative and use

(b) Find the P-value for this test.

(c) Construct a 95% two-sided confidence interval on the meanrod diameter.

Answer & Explanation Solved by verified expert
3.7 Ratings (618 Votes)
SolutionGiven 00001n 25 05046Claim mean rod diameter is 05025 ina Using the claim the hypothesis can be written asH0 05025vs H1 05025 sign    See Answer
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