PRACTICE OF STATISTICS F/AP EXAM
PRACTICE OF STATISTICS F/AP EXAM
6th Edition
ISBN: 9781319113339
Author: Starnes
Publisher: MAC HIGHER
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Chapter 11, Problem T11.3SPT
To determine

To select correct expected number of Hispanic drivers who would receive a ticker.

Expert Solution & Answer
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Answer to Problem T11.3SPT

Option d) is correct.

Explanation of Solution

Given:

    Race/Ethnicity Number of tickets Proportion
    White 69 0.55
    Black 52 0.3
    Hispanic 18 0.08
    Other 9 0.07

Calculation:

Expected counts are:

    Race/Ethnicity Number of tickets Proportion Expected
    White 69 0.55 81.4
    Black 52 0.3 44.4
    Hispanic 18 0.08 11.84
    Other 9 0.07 10.36
    Total 148 1 148

Expected value for Hispanic is 11.84. Hence, option d is correct.

Chapter 11 Solutions

PRACTICE OF STATISTICS F/AP EXAM

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