Question

One year consumers spent an average of

​$21

on a meal at a resturant. Assume

that the amount spent on a resturant meal is normally distributed and that the standard deviation is

​$6

.

Complete parts​ (a) through​ (c) below.

c.

Between what two values will the middle

95

​%

of the amounts of cash spent​ fall?

The middle

95% of the amounts of cash spent will fall between

X=$

and

X=$

​(Round to the nearest cent as​ needed.)

Can you demonstrate how this can be solved using excel for example: Norm.Inv