What do you think?

Bonus question. On the 2016 "Forbes 400" list, the assets of Microsoft co-founder Bill Gates, Berkshire Hathaway CEO Warren Buffett, Amazon founder and CEO Jeff Bezos, Facebook co-founder and CEO Mark Zuckerberg, and Oracle founder and CEO Larry Ellison were respectively measured in billions of dollars as 75, 61, 45, 45, and 44, making them the five wealthiest people in the United States. Suppose that samples of size 2 are selected with replacement from this set of five values. (a) List all 25 possible samples under these conditions and find the mean of each sample. (b) Find the mean of the distribution of sample means that results from part (a). (c) Is the mean in part (b) equal to the mean of the five listed values? Are those means always equal