Statistics Solutions

(Steps Shown) The diameters of aluminum alloy rods produced on an extrusion machine are known to have a standard deviation of 0.0001 in. A random sample of 25

Question: The diameters of aluminum alloy rods produced on an extrusion machine are known to have a standard deviation of 0.0001 in. A random sample of 25 rods has an average diameter of 0.5046 in.

  1. Test the hypothesis that mean rod diameter is 0.5025 in. Assume a two-sided alternative and use \(\alpha \) = 0.05.
  2. Find the P-value for this test
  3. Construct a 95% two-sided confidence interval on the mean rod diameter.

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Solution: The downloadable solution consists of 2 pages
Deliverable: Word Document


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