Elementary Statistics
Elementary Statistics
12th Edition
ISBN: 9780321837936
Author: Mario F. Triola
Publisher: PEARSON
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Chapter 11, Problem 1CQQ
To determine

To identify: The null and alternate hypotheses.

Expert Solution & Answer
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Answer to Problem 1CQQ

The null Hypothesis, H0:p1=p2=p3=p4=p5=15_

The alternative hypothesis, H1 is at least one of the proportions is not equal to the given claim.

Explanation of Solution

Given info:

The dataset shows that the frequencies for randomly selected nonfatal occupation injuries arranged to day of the week.

Justification:

Since, there are five days. The claim is to test whether such injuries occur with equal frequency on different days of the week. Each of the days has equal chance to occur as last day. Thus, the probability for each days to occur as last day has equal probability which is 15 .

Hence, the null hypothesis is,

H0:p1=p2=p3=p4=p5=15_

If the claim is false, then at least one of the days is different from the given probability of occurrence 15 . Hence, the alternative hypothesis is,

H1: At least one of the proportions is not equal to the given claim.

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Chapter 11 Solutions

Elementary Statistics

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