单项选择题
A.approximation theorem
B.normal probability theorem
C.central limit theorem
D.central normality theorem
单项选择题 The purpose of statistical inference is to provide information about the（）
单项选择题 If A and B are independent events，then（）
单项选择题 Exhibit 2 The following represents the probability distribution for the daily demand of computers at a local store. Refer to Exhibit 2.The probability of having a demand for at least two computers is（）