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StatisticsEssentials of Statistics for the Behavioral SciencesThe city school district is considering increasing class size in the elementary schools. However, some members of the school board are concerned that larger classes may have a negative effect on student learning. In words, what would the null hypothesis say about the effect of class size on student learning?BuyFind*arrow_forward*

8th Edition

Frederick J Gravetter + 1 other

Publisher: Cengage Learning

ISBN: 9781133956570

Chapter 8.1, Problem 1LC

Textbook Problem

The city school district is considering increasing class size in the elementary schools. However, some members of the school board are concerned that larger classes may have a negative effect on student learning. In words, what would the null hypothesis say about the effect of class size on student learning?

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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