Math, asked by himanshu773356, 5 months ago

A sample credit sales in a deparment store showed in average sale of $120.00. From past data , it is known that the standard deviation of the population is $40.00
(a) determine the standard error of the mean
(b) with the 0.95 probability , determine margin of error
(c) what is the 95% confidence interval of the population mean ?

Answers

Answered by diyu1708
0

Answer:

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