A scientist is studying the impact of certain vitamins on a person's ability to remember. The sample size for the experimental group was 45. When a two-tailed t test was calculated, the t statistic came out to be 1.74. What are the percent of variance (r²) and the size of the effect? O 0 08 which indie

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
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Chapter4: Equations Of Linear Functions
Section4.5: Correlation And Causation
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A scientist is studying the impact of certain vitamins on a person's ability to remember. The sample
size for the experimental group was 45. When a two-tailed t test was calculated, the t statistic came
out to be 1.74. What are the percent of variance (r²) and the size of the effect?
O 0.08, which indicates a medium effect
O 0.06, which indicates a medium effect
O 0.03, which indicates a small effect
O 0.30, which indicates a large effect
Transcribed Image Text:A scientist is studying the impact of certain vitamins on a person's ability to remember. The sample size for the experimental group was 45. When a two-tailed t test was calculated, the t statistic came out to be 1.74. What are the percent of variance (r²) and the size of the effect? O 0.08, which indicates a medium effect O 0.06, which indicates a medium effect O 0.03, which indicates a small effect O 0.30, which indicates a large effect
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