The Quality Control Department employs five technicians during the day shift. Li

Question

The Quality Control Department employs five technicians during the day shift. Listed below is the number of times each technician instructed the production foreman to shut down the manufacturing process last week.

Compute the mean of the sample means and compare it to the population mean. (Round your answers to 1 decimal place.)

The Quality Control Department employs five technicians during the day shift. Listed below is the number of times each technician instructed the production foreman to shut down the manufacturing process last week.

Explanation / Answer

a)

total number of samples = 5C2 = 10 ways

let a,b,c,d,e represent the technicians respectively

possible comb…..ab….. ac…. ad….. ae….. bc…. bd…. be…. cd…. ce….. de

sample mean …..2.5…..3.5…..4…….3……3……..3.5…..2.5….4.5….3.5…..4

mean of sample mean = 34/10 = 3.4

population mean = (3+2+4+5+3)/5 = 3.4

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