一道统计学的英文题it was found that 35% of all customers order hot meals a_英语解答

一道统计学的英文题
it was found that 35% of all customers order hot meals and that 50% of all customers are students.Further,25% of all customers who are students order hot meals.
what is the probability that a chosen customer both does not order a hot meal and is not a student?
875

人气：386 ℃　时间：2020-02-05 10:15:15

解答

Note that "Further, 25% of all customers who are students order hot meals"===>About (50% * 25%) of all customers both are students and order hot meals.===>Probability of A customer = not student &...