Chapter 10: Q. 10.108 (page 440)
What constitutes each pair in a paired sample?
Each pair constitute the difference between the values of the variable under consideration on the members of the pair.
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In each of exercise 10.13-10.18, we have presented a confidence interval for the difference,, between two population means. interpret each confidence interval.
CI is from
Left-Tailed Hypothesis Tests and CIs. If the assumptions for a nonpooled -interval are satisfied, the formula for a level upper confidence bound for the difference, . between two population means is
For a left-tailed hypothesis test at the significance level , the null hypothesis will be rejected in favor of the alternative hypothesis if and only if the -level upper confidence bound for is less than or equal to 0. In each case, illustrate the preceding relationship by obtaining the appropriate upper confidence bound and comparing the result to the conclusion of the hypothesis test in the specified exercise.
a. Exercise
b. Exercise
In each of exercise 10.13-10.18, we have presented a confidence interval for the difference,, between two population means. interpret each confidence interval
CI from
Discuss the basic strategy for performing a hypothesis test to compare the means of two populations, based on independent samples.
The intent is to employ the sample data to perform a hypothesis test to compare the means of the two populations from which the data were obtained. In each case, decide which of the procedures should be applied.
Independent:
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