A random sample of 25 college statistics textbook prices was collected and the mean price was found to be $91. To determine the probability of finding a sample mean of $91 or more extreme, you would need to refer to
A) the population distribution of all college statistics textbook prices.
B) the distribution of prices for this sample of college statistics textbooks.
C) the distribution of sample mean textbook prices for all samples of 25 textbooks from this population.
D) You don't need to refer to anything since if the sample of 25 was randomly selected, then the sample mean of $91 must be close to the population mean textbook price.

Question

Quizplus · Accepted Answer

The distribution of sample mean textbook prices for all samples of 25 textbooks from this population is needed to determine the probability of finding a sample mean of $91 or more extreme. This is because the sampling distribution of the sample mean allows us to understand the variability of sample means and calculate probabilities.

A Random Sample of 25 College Statistics Textbook Prices Was