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Q. 56

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Precalculus Enhanced with Graphing Utilities

Found in: Page 866

Book edition 6th

Author(s) Sullivan

Pages 1200 pages

ISBN 9780321795465

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Short Answer

According to the Girl Scouts of America, 9% of all Girl Scout cookies sold are shortbread/ trefoils. If a box of Girl Scout cookies is selected at random, what is the probability that it is not shortbread/trefoils?

The probability is $0.91$

See the step by step solution

Step by Step Solution

TABLE OF CONTENTS :

TABLE OF CONTENTS

Step 1. Given Information

The given data is that 9% of all Girl Scout cookies sold are shortbread/ trefoils.

Step 2. Explanation

If E represents an event and $E$ represents the complement of E then $P (E) = 1 - P (E)$ . It is given that $P (E) = 0.09$

Substitute the values in the formula to find the required value.

$P (E) = 1 - P (E) = 1 - 0.09 = 0.91$

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