State your conclusions (use a two-tailed test with a = .05 for all tests). b. Compute an effect size. 1. A researcher would like to evaluate the changes in reading ability for a class of 22 children. The children were assessed on their reading ability at the beginning of the school year and then again at the end of the year. Reading scores increased by an average of 7 points over the school year. The difference scores had a variance of 100. Was there a significant change in reading ability?

State your conclusions (use a two-tailed test with a = .05 for all tests). b. Compute an effect size. 1. A researcher would like to evaluate the changes in reading ability for a class of 22 children. The children were assessed on their reading ability at the beginning of the school year and then again at the end of the year. Reading scores increased by an average of 7 points over the school year. The difference scores had a variance of 100. Was there a significant change in reading ability?

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

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.4: Distributions Of Data

Problem 19PFA

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Question

a. State your conclusions (use a two-tailed test with a = .05 for all tests).

b. Compute an effect size.

1. A researcher would like to evaluate the changes in reading ability for a class of 22 children. The children were assessed on their reading ability at the beginning of the school year and then again at the end of the year. Reading scores increased by an average of 7 points over the school year. The difference scores had a variance of 100. Was there a significant change in reading ability?

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