Suppose that you are a student aide in the library and agree to be paid according to the

“random pay” system. Each week, the librarian flips a coin. If the coin comes up heads, your pay for the week is $80. If it comes up tails, your pay for the week is $40. You work for the library for 100 weeks. Suppose we choose an SRS of 2 weeks and calculate your average earnings x–. The shape of the sampling distribution of x– will be

(a) Normal.

(b) approximately Normal.

(c) right-skewed.

(d) left-skewed.

(e) symmetric but not Normal.