Answer
a) No
b) No
Work Step by Step
a) To solve this problem, we put all the data into Microsoft Excel. Then we highlight all the data, click the insert tab, and select the picture that resembles a histogram. After doing this, we can see that the data are not bell shaped, hence it is not a normal distribution.
b) No, it cannot. When the population does not have a normal distribution, the mean will be skewed, hence it should not be relied upon.