英语翻译The manager of a supermarket wants to obtain information about the proportion of customers who dislike a new policy on cashing checks.Suppose the true population proportion of customers who dislike the new policy is 0.5.a) If the manager samples 50 customers,find the probability that the sample proportion will be within 0.15 units of the true population proportion.
问题描述：
英语翻译
The manager of a supermarket wants to obtain information about the proportion of customers who dislike a new policy on cashing checks.Suppose the true population proportion of customers who dislike the new policy is 0.5.
a) If the manager samples 50 customers,find the probability that the sample proportion will be within 0.15 units of the true population proportion.
答
超市经理想要知道有多大比例的顾客不喜欢新实行的现金支票政策.假设实际上不喜欢新政策的顾客比例是0.5
a.经理选择的顾客标本是50人,问经理得出的顾客比例是实际顾客比例的0.15之内的概率是多少.