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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

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