# Assume that three assays are selected at random from the following results: The resultant sample…

Assume that three assays are selected at random from the following results:

The resultant sample consists of tablets 05, 16, and 27.

a. Based on this one sample and assuming that the population standard deviation  is known to be 2.01, calculate 95% confidence intervals for the population mean.

b. Again, based on this one sample, calculate the 90% and 99% confidence intervals for the population mean. How do these results compare to the 95% confidence interval for the same sample in the previous example?

c. Assuming the true population mean (μ) is 75.47 for all 30 data points, did our one sample create confidence intervals at the 90%, 95%, and 99% levels, which included the population mean?

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