Answer
a. No
b. No
Work Step by Step
a. In order to solve this problem, put all of the data into Microsoft Excel. Then, highlight all of the data, click the insert tab, and select the picture that resembles a histogram. (Note, this is for Microsoft Excel 2016.) When we do this, we see that the data are not bell shaped, meaning that it is not a normal distribution.
b. No, it cannot. When the population does not have a normal distribution, the mean will be skewed, and thus it should not be relied upon.