Asked by lupita
The number of cars sold annually by used car salespeople is normally distributed with a standard deviation of 18. A random sample of 310 salespeople was taken and the mean number of cars sold annually was found to be 71. Find the 94% confidence interval estimate of the population mean.
Answers
Answered by
PsyDAG
94% = mean ± 1.88 SEm
SEm = SD/√n
SEm = SD/√n
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