GRE
The probability that Jessica`s car will be repaired today
$$\frac{1}{3}$$
he standard deviation of the numbers in set S
The standard deviation of the numbers in set T
The number of copies of Magazine X that were sold last month at the subscription price
Twice the number of copies of Magazine X that were sold last month at the cover price
25000 +道题目
236本备考书籍