Terese manages a grocery store warehouse that encourages volume shopping on the part of customers. Therese has discovered that on any given weekday, 70% of the customers' sales amount to more than $100. that is, any given sale on such a day has a probability of 0.70 of being for more than $100.

Question

Terese manages a grocery store warehouse that encourages volume shopping on the part of customers. Therese has discovered that on any given weekday, 70% of the customers' sales amount to more than $100. that is, any given sale on such a day has a probability of 0.70 of being for more than $100.
a) the first sales on Wednesday are both for more than $100.
b) None of the first three sales on Wednesday is for more than $100.

unowen · Answer

a).7 x .7=0.49 b).3 x .3 x .3=0.027