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Q. 63

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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

Problems 63–66 are based on a consumer survey of annual incomes in 100 households. The following table gives the data.
What is the probability that a household has an annual income of $30,000 or more?

The probability is $\frac{3}{10}$

See the step by step solution

Step by Step Solution

TABLE OF CONTENTS :

TABLE OF CONTENTS

Step 1. Given Information

The given table is

Step 2. Calculation

The number of households having an annual income of $30,000 or more is $n (E) = 20 + 10 = 30$

The sample space consists of households, the number of households are $n (S) = 5 + 35 + + 30 + 20 + 10 = 100$

Substitute the values in the formula to find the required probability,

$P (E) = \frac{n (E)}{n (S)} = \frac{30}{100} = \frac{3}{10}$

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