You want to make a confidence interval for the true average

You want to make a confidence interval for the true average number of users of the video server at UF. A random sample of 8 days reveals the following numbers:

4593, 5197, 3865, 4835, 3900, 3171, 3559, 18091

Can we use the t table to make this confidence interval?

A. Yes, because the sample is small.

B. No, we should use the z table because the sample size is small.

C. Yes, since the population is Normal.

D. No, since a plot of the data shows an outlier.

Solution

D. No, since a plot of the data shows an outlier.