Essay
A random sample of 100 credit sales in a department store showed an 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 a .95 probability, determine the margin of error.
c.
What is the 95% confidence interval of the population mean?
Correct Answer:
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a.
4
b.
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Correct Answer:
Verified
a.
4
b.
...
View Answer
Unlock this answer now
Get Access to more Verified Answers free of charge
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