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StatisticsEssentials of Statistics for the Behavioral SciencesFind each of the requested values for a population with a mean of μ = 50 and a standard deviation of σ = 20. a. What is the z -score corresponding to X = 52? b. What is the X value corresponding to z = -0.50? c. If all of the scores in the population are transformed into z-scores, what will be the values for the mean and standard deviation for the complete set of scores ? d. What is the z-score corresponding to a sample mean of M = 42 for a sample of n = 4 scares? e. What is the z-score corresponding to a sample mean of M = 42 for a sample of n = 16 scores?
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Find each of the requested values for a population with a mean of μ = 50 and a standard deviation of σ = 20. a. What is the z -score corresponding to X = 52? b. What is the X value corresponding to z = -0.50? c. If all of the scores in the population are transformed into z-scores, what will be the values for the mean and standard deviation for the complete set of scores ? d. What is the z-score corresponding to a sample mean of M = 42 for a sample of n = 4 scares? e. What is the z-score corresponding to a sample mean of M = 42 for a sample of n = 16 scores?

BuyFind

Essentials of Statistics for the B...

8th Edition
Frederick J Gravetter + 1 other
Publisher: Cengage Learning
ISBN: 9781133956570
BuyFind

Essentials of Statistics for the B...

8th Edition
Frederick J Gravetter + 1 other
Publisher: Cengage Learning
ISBN: 9781133956570

Solutions

Chapter
Section
Problem 1P
Problem 2P
Problem 3P
Problem 4P
Problem 5P
Problem 6P
Problem 7P
Problem 8P
Problem 9P
Problem 10P
Problem 11P
Problem 12P
Problem 13P
Problem 14P
Problem 15P
Problem 16P
Problem 17P
Problem 18P
Problem 19P
Problem 20P
Problem 21P
Problem 1RE
Problem 2RE
Problem 3RE
Chapter 8, Problem 1RE
Textbook Problem

Find each of the requested values for a population with a mean of μ = 50 and a standard deviation of σ = 20.

a. What is the z -score corresponding to X = 52?

b. What is the X value corresponding to z = -0.50?

c. If all of the scores in the population are transformed into z-scores, what will be the values for the mean and standard deviation for the complete set of scores?

d. What is the z-score corresponding to a sample mean of M = 42 for a sample of n = 4 scares?

e. What is the z-score corresponding to a sample mean of M = 42 for a sample of n = 16 scores?

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Chapter 8 Solutions

Essentials of Statistics for the Behavioral Sciences
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Ch. 8.1 - The city school district is considering increasing...Ch. 8.1 - If the alpha level is increased from = .01 to =...Ch. 8.1 - If a researcher conducted a hypothesis test with...Ch. 8.1 - A researcher selects a sample of n = 16...Ch. 8.1 - A small value (near zero) for the z-score...Ch. 8.1 - A z-score value in the critical region means that...Ch. 8.2 - Define a Type I error.Ch. 8.2 - Define a Type II error.Ch. 8.2 - Under what circumstances is a Type II error likely...Ch. 8.2 - If a sample mean is in the critical region with =...
Ch. 8.2 - If a sample mean is in the critical region with =...Ch. 8.3 - A researcher conducts a hypothesis test with =...Ch. 8.3 - In a research report, the term significant is used...Ch. 8.3 - In a research report, the results of hypothesis...Ch. 8.3 - If other factors are held constant, increasing the...Ch. 8.3 - If other factors are held constant, are you more...Ch. 8.4 - A researcher selects a sample from a population...Ch. 8.4 - If a sample is sufficient to reject the null...Ch. 8.4 - A researcher obtains z = 2.43 for a hypothesis...Ch. 8.5 - Explain how increasing the sample size influences...Ch. 8.5 - A researcher selects a sample from a population...Ch. 8.5 - A researcher selects a sample from a population...Ch. 8.6 - As the power of a test increase, what happens to...Ch. 8.6 - For a 5-point treatment effect, a researcher...Ch. 8.6 - How does sample size influence the power of a...Ch. 8.6 - A researcher administers a treatment to a sample...Ch. 8 - The value of the z-score in a hypothesis test is...Ch. 8 - Define the alpha level and the critical region,...Ch. 8 - Although there is a popular belief that herbal...Ch. 8 - Childhood participation in sports, cultural...Ch. 8 - A local college requires an English composition...Ch. 8 - A random simple is selected from a normal...Ch. 8 - A random sample of n = 25 scores is selected from...Ch. 8 - Brunt, Rhee, and Zhong (2008) surveyed 557...Ch. 8 - A random simple is selected from a normal...Ch. 8 - In a study examining the effect of alcohol on...Ch. 8 - The researchers cited in the previous problem...Ch. 8 - There is some evidence indicating that people with...Ch. 8 - Researchers at a National Weather Center in the...Ch. 8 - Montarello and Martens (2005) found that...Ch. 8 - Researchers hate noted a decline in cognitive...Ch. 8 - A researcher plans to conduct an experiment...Ch. 8 - A sample of n = 40 is selected from a normal...Ch. 8 - Briefly explain how increasing sample size...Ch. 8 - Explain how the power of a hypothesis test is...Ch. 8 - A researcher is investigating the effectiveness of...Ch. 8 - A researcher is evaluating the influence of a...Ch. 8 - Find each of the requested values for a population...Ch. 8 - A survey of high school seniors shows that the...Ch. 8 - Miller (2008) examined the energy drink...

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