Statistics

Feb 3rd, 2012
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Question and answers are attached on statistics , the answers are 100% correct , there is fully detailed of the answers so please have a look on it .

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1. The manager of a paint supply store wants to determine whether the mean amount of paint contained in 1-gallon cans purchased from a nationally known manufacturer actually is 1 gallon. It is known from the manufacturer's specifications that the standard deviation of the amount of paint is equal to 0.02 gallon. A random sample of 50 cans is selected, and the mean of the amount of paint per 1-gallon can is found to be .995 gallon.a. Is there evidence that the mean amount is different from 1.0 gallon (use a=0.01)?b. Compare the p-value and interpret its meaning.c. Construct a 99% confidence interval estimate of the population mean amount of paint.d. Compare the results of (a) and (c). What conclusions do you reach?(a)n = 50 ? = 1 s = 0.02 x-bar = 0.995 (1) Formulate the hypotheses: Ho: ? = 1 Ha: ? ? 1 (2) Decide the test statistic and the leve

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