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A simple random sample of 23 bicycle helmets had a mean price of x = $38.12. It is reasonable to assume that the population of
A simple random sample of 23 bicycle helmets had a mean price of x = $38.12. It is reasonable to assume that the population of helmet prices is approximately normal with population standard deviation o= $7.79. Is it appropriate to use the methods of this section to construct a confidence interval for the mean helmet price?
O Yes.
O No, the sample size is too small, and we cannot assume the population is approximately normal.
O No, the standard deviation is not known.
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Fundamentals Of Investments
Authors: Charles J. Corrado
3rd Edition
0072829192, 978-0072829198
