Question

The meat packing department of a large grocery store packs ground beef in two pound portions....

The meat packing department of a large grocery store packs ground beef in two pound portions. Supervisors are concernedthattheirmachineispackagingthebeeftoalevelabovetherequiredspecifications. To test the claim that the mean weight of ground beef portions is more than 2.00 pounds, the supervisors calculate the mean weight for a simple random sample of 20 packages of beef. The sample mean is 2.10 pounds with a standard deviation of 0.33 pounds. If there is a problem, there will be an expensive process to fix the problem.

3a. Is there sufficient evidence at the ? = 0.05 level of significance to support this claim ? State null and alternative hypotheses, draw a diagram of an appropriate model that is labeled, and find the P value. State the conclusion about the machine.

3b. If the conclusion you just reached about the machine is false, what type of error did you make ,Type I or Type II?

3c. Is there sufficient evidence at the ? = 0.10 level of significance to support the claim ? State the conclusion about the machine.

3d. If the conclusion you just reached about the machine is false, what type of error did you make ?

Math   Statistics-And-Probability   
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