An investigator predicts that students taking an achievement test in the morning will perform differently than students taking the same test in the afternoon. Eight students are assigned to take the test in the morning and 8 students are assigned to take the test in the afternoon.  Run an independent samples t-test and summarize findings using an alpha level of .05, two-tailed. Also construct a bar graph to graphically represent your results.   Morning Group: 25, 31, 44, 36, 29, 42, 39, 41 Afternoon Group: 22, 25, 24, 27, 33, 28, 31, 34

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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  1. An investigator predicts that students taking an achievement test in the morning will perform differently than students taking the same test in the afternoon. Eight students are assigned to take the test in the morning and 8 students are assigned to take the test in the afternoon.  Run an independent samples t-test and summarize findings using an alpha level of .05, two-tailed. Also construct a bar graph to graphically represent your results.

 

Morning Group: 25, 31, 44, 36, 29, 42, 39, 41

Afternoon Group: 22, 25, 24, 27, 33, 28, 31, 34

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