Answered: What is the test statistic?

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Statistics

What is the test statistic?

College Algebra (MindTap Course List)

12th Edition

ISBN:9781305652231

Author:R. David Gustafson, Jeff Hughes

Publisher:R. David Gustafson, Jeff Hughes

Chapter8: Sequences, Series, And Probability

Section8.7: Probability

Problem 58E: What is meant by the sample space of an experiment?

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Question

Zip, Inc. manufactures Zip drives on two different manufacturing processes. Because the management of this company is interested in determining if process 1 takes more manufacturing time, they selected independent samples from each process. The results of the samples are shown below.

	Process 1	Process 2
Sample Size	28	24
Sample Mean (in minutes)	15	12
Sample Variance	16	25

What is the test statistic? (Round to the 3 decimal places; otherwise, no credit.)

Definition Definition Number of subjects or observations included in a study. A large sample size typically provides more reliable results and better representation of the population. As sample size and width of confidence interval are inversely related, if the sample size is increased, the width of the confidence interval decreases.

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