True or False: We can use the standard deviation obtained from the sample to estimate the population standard deviation.

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True Or False We Can Use The Standard Deviation Obtained From The Sample To Estimate The Population Standard Deviation 1 (25.27 KiB) Viewed 32 times

4. Do we need to check if the sample of 50 observations is
normally distributed for this example? Explain why/why not.
True or False: We can use the standard deviation obtained from the sample to estimate the population standard deviation. Select one: O True False

As we do not know the population standard deviation, which distribution should we use to determine the 95% confidence interval for the population mean time to complete the pizza order? Select one: a. t-distribution b. Z-distribution C. F-distribution d. chi-square distribution

What assumption do we need to make in order that a confidence interval can be constructed? Select one: a. Distribution is normally distributed b. The data is skewed C. No assumption is necessary d. The standard deviation is small