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9th Edition

Frederick J Gravetter + 2 others

Publisher: Cengage Learning

ISBN: 9781337098120

Chapter 11.4, Problem 4LC

Textbook Problem

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A repeated-measures study finds a mean difference of *M _{D}* = 5 points between two treatment conditions. Which of the following sample characteristics is most likely to produce a significant

**a.** A large sample size *(n)* and a large variance

**b.** A large sample size *(n)* and a small variance

**c.** A small sample size *(n)* and a large variance

**d.** A small sample size (n) and a small variance

To determine

The sample characteristics which are most likely to produce a significant *t* statistic for the hypothesis test.

**Given info:**

Repeated measures study with a mean difference of

**Reason for correct answer:**

The formulae of *t* statistic for repeated measures study is:

So, *t* statistic is directly proportional to square root of sample size and inversely proportional to the square root of sample variance

Essentials of Statistics for The Behavioral Sciences (MindTap Course List)

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Ch. 11.1 - In a repeated-measures study, the same group of...Ch. 11.1 - A researcher conducts a research study comparing...Ch. 11.1 - For an experiment comparing two treatment...Ch. 11.2 - What is the mean for the difference scores for the...Ch. 11.2 - Which of the following is the correct statement of...Ch. 11.2 - Which of the following accurately describes the...Ch. 11.2 - What is the value for the estimated standard error...Ch. 11.3 - A researcher conducts a repeated-measures study...Ch. 11.3 - A researcher is using a one-tailed hypothesis test...Ch. 11.4 - The results of a repeated-measures study with n =...

Ch. 11.4 - For a repeated-measures study with n 12 scores in...Ch. 11.4 - A research report describing the results from a...Ch. 11.4 - A repeated-measures study finds a mean difference...Ch. 11.4 - If the results of a repeated-measures study show...Ch. 11.5 - Which of the following possibilities is a concern...Ch. 11.5 - For which of the following situations would an...Ch. 11.5 - A matched-subjects study comparing two treatments...Ch. 11 - For the each of the following studies determine...Ch. 11 - What is the defining characteristic of a...Ch. 11 - A researcher conducts an experiment comparing two...Ch. 11 - A repeated-measures and an independent-measures...Ch. 11 - A sample of n = 16 individuals participates in a...Ch. 11 - Resenhoeft, Villa, and Wiseman (2008) conducted a...Ch. 11 - The following data are from a repeated-measures...Ch. 11 - When you get a surprisingly low price on a product...Ch. 11 - Masculine-themed words (such us competitive,...Ch. 11 - The stimulant Ritalin has been shown to increase...Ch. 11 - College athletes, especially males, are often...Ch. 11 - Callahan (2009) demonstrated that tai chi can...Ch. 11 - Research results indicate that physically...Ch. 11 - There is some evidence suggesting that you are...Ch. 11 - In Example 8.1 (page 200) we discussed a research...Ch. 11 - Solve the following problems. a. A...Ch. 11 - Solve the following problems. a. A...Ch. 11 - A sample of difference stores from a...Ch. 11 - Participants enter a research study with unique...Ch. 11 - Swearing is a common, almost reflexive, response...Ch. 11 - The previous problem demonstrates that removing...Ch. 11 - Explain the difference between a matched-subjects...Ch. 11 - A researcher conducts an experiment comparing two...Ch. 11 - A repeated-measures, a matched-subjects, and an...

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