Question

The diameters of steel shafts produced by a certain manufacturing process should have a mean diameter of 0.255 inches The diameter is known to have a standard deviation of sigma = 0.0001 inch. A random sample of 10 shafts has an average diameter of 0.2545 inches.

Set up the appropriate hypotheses on the mean mu.
Test them: hypotheses using alpha = 0.05.
What are your conclusions? Find the P-value for this test.
Construct a 95 percent confidence interval on the mean shaft diameter.

Answer 1

I honestly wish I could help but I don’t even know how to do basic math

Answer 2

Answer:

Transcribed image text: The diameters of steel shafts produced by a certain manufacturing process should have a mean diameter of 0.255 inches The diameter is known to have a standard deviation of sigma = 0.0001 inch. A random sample of 10 shafts has an average diameter of 0.2545 inches. Set up the appropriate hypotheses on the mean mu. Test them: hypotheses using alpha = 0.05. What are your conclusions? Find the P-value for this test. Construct a 95 percent confidence interval on the mean shaft diameter.

Step-by-step explanation: