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 Z value (z) can be calculated as follows:
The Z value is 4.31. The p value is 0. Since the p value is equal to 0, the alternate hypothesis is accepted.
b:
Testing a new hypothesis.
b:
Explanation of Solution
Null hypothesis (H0) is
The Z table value can be calculated as follows:
The Z table value is 1.645.
The Z value (z) can be calculated as follows:
The Z value is 2.16.
The p value (p) can be calculated as follows. Since the p value is equal to 0, the alternate hypothesis is accepted.
The p value is 0.0154.
c:
Calculate the upper and lower limits.
c:
Explanation of Solution
The values of upper limit (UL) and lower limit (LL) can be calculated as follows:
The lower limit is 0.055 and the upper limit is 0.145.
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Chapter 13 Solutions
Statistics for Management and Economics (Book Only)
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