An educational psychologist would like to determine whether access to computers has an effect on grades for high school students. One group of n = 16 students has home room each day in a computer classroom in which each student has a computer. A comparison group of n = 16 students has home room in a traditional classroom. At the end of the school year, the average grade is recorded for each student. The data are as follows:ComputerTraditionalM = 86M = 82.5SS = 1005SS = 1155 Answer TableWhich kind of t-Test should be used? Does this require a one-tailed test or a two-tailed test? What is the sample size? What are the degrees of freedom? What is the critical value if significance is set at p < .05? What was the obtained t value? (i.e. what was the result of the t-test after you calculated using the appropriate formula?) Was the result significant?

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Description: An educational psychologist would like to determine whether access to computers has an effect on grades for high school students. One group of n = 16 students has home room each day in a computer classroom in which each student has a computer. A comp

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Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.6: Summarizing Categorical Data

Problem 10CYU

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An educational psychologist would like to determine whether access to computers has an effect on grades for high school students. One group of n = 16 students has home room each day in a computer classroom in which each student has a computer. A comparison group of n = 16 students has home room in a traditional classroom. At the end of the school year, the average grade is recorded for each student. The data are as follows:

*Computer*	*Traditional*
M = 86	M = 82.5
SS = 1005	SS = 1155

Answer Table
Which kind of t-Test should be used?
Does this require a one-tailed test or a two-tailed test?
What is the sample size?
What are the degrees of freedom?
What is the critical value if significance is set at p < .05?
What was the obtained t value? (i.e. what was the result of the t-test after you calculated using the appropriate formula?)
Was the result significant?

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