a:
Testing hypothesis.
a:
Explanation of Solution
Null hypothesis (H0) is
The Z table value can be calculated as follows:
The Z table value is 1.645.
The estimated p1 value can be calculated as follows:
The estimated p2 value can be calculated as follows:
The estimated total pvalue can be calculated as follows:
The calculated Z value (z) can be calculated as follows:
The Z value is 2.5.
The p value (p) can be calculated as follows:
The p value is 0.0062. Since the p value is nearlyequal to 0, the alternate hypothesis is accepted.
b:
Testing hypothesis.
b:
Explanation of Solution
Null hypothesis (H0) is
The Z table value can be calculated as follows:
The Z table value is 1.96.
The estimated p1 value can be calculated as follows:
The estimated p2 value can be calculated as follows:
The estimated total pvalue can be calculated as follows:
The calculated Z value (z) can be calculated as follows:
The Z value is -0.53.
The p value (p) can be calculated as follows:
The p value is 0.5962. Since the p value is significantly different from 0, the alternate hypothesis is not accepted.
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Chapter 13 Solutions
Statistics for Management and Economics (Book Only)
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