Question

The probability is 0.2 that a person shopping at a certain store will spend less than $20. For groups of size 17, find the mean number who spend less than $20.

A. 16.0
B. 13.6
C. 3.4
D. 4.0

Answer 1

Answer:

The correct option is :  C.  3.4

Step-by-step explanation:

The probability that a person shopping at a certain store will spend less than $20 is 0.2

That means, here  $p= 0.2$

Given that, the sample size$(n)= 17$

So, the Mean $=n*p= 17*0.2=3.4$

Thus, the mean number who spend less than $20 will be  3.4