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Q1) State meat inspector in Iowa has been given assignment of evaluating mean net weight of packages of ground chuck labelled "3 pounds." Of course, he realizes that weights cannot be precisely 3 pounds. Sample of 36 packages reveals mean weight to be 3.01 pounds, with standard deviation of 0.03 pounds.

a) What is the estimated population mean?

b) Find out a 95% confidence interval for population mean.

2) What is sampling error? Could value of sampling error be zero? If it were zero, what would this mean?

3) Write down the reasons for sampling. Provide example of each reason for sampling.

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