A data is collected from Lab A, and this data is considered as the reference (standard). Sample mean is 12, SD is 2.4 and sample size if 16. Another set of data from Lab B have a mean of 10, SDB is 2.4 and nB=16. If we choose α = 0.05, do you think mean of Lab B is close enough to be considered the “same” as that of Lab A? Why?

A data is collected from Lab A, and this data is considered as the reference (standard). Sample mean is 12, SD is 2.4 and sample size if 16. Another set of data from Lab B have a mean of 10, SDB is 2.4 and nB=16. If we choose α = 0.05, do you think mean of Lab B is close enough to be considered the “same” as that of Lab A? Why?

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 8CR

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Question

A data is collected from Lab A, and this data is considered as the reference (standard).
Sample mean is 12, SD is 2.4 and sample size if 16. Another set of data from Lab B have a mean
of 10, SDB is 2.4 and nB=16. If we choose α = 0.05, do you think mean of Lab B is close enough to
be considered the “same” as that of Lab A? Why?

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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