An inspector samples cans from a truckload of canned creamed corn to estimate th

Question

An inspector samples cans from a truckload of canned creamed corn to estimate the average number of worm fragments per can. The truck has 580 cases; each case contains 24 cans. The inspector samples 12 cases at random and subsamples 3 cans randomly from each selected case. Estimate the mean number of worm fragments per can, along with the standard error of your estimate. (You may use the result of Exercise 11 to calculate the SE.) Suppose a new truckload is to be inspected and is thought to be similar to this one. It takes 10 minutes to locate and open a case, and 8 minutes to locate and examine each specified can within a case. How many cans should be examined per case?

Explanation / Answer

Descriptive Statistics: Can 1, Can 2, Can 3

Variable Mean StDev
Can 1 2.833 2.209
Can 2 3.833 3.070
Can 3 4.250 2.832

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