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Task: Use a P-value to test the claim about the population mean using the given sample statistics. State your decision for a=0.05. Claim: mean does not = 230; Sample statistics: x(bar) = 216.5, s=17.3, n=48.
This activity is a revision of an activity found in Real Data: A Statistics Workbook Based on Empirical Data by Z. C Holcomb (1997). Published by Pyrczak Publishing.
A manufacturer of athletic footwear claims that the mean useful lifetime of his product will exceed 50 hours. A random sample of 36 pairs of shoes leads to the following sample results, in terms of useful life: x = 52.3 hours and s = 9.6 hours.
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Based on the F distribution tables, what is the most accurate statement that can be made about the p-value for this test?
What kind of correlation do you expect to find between annual income and amount spent on car? Will it be positive or negative?
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