The scores of a random sample of 8 students on a physics test are as follows: 60, 62, 67, 69, 70, 72, 75, and 78. a. Test to see if the sample mean is significantly different from 65 at the .05 level. Report the t and p values. b. The researcher realizes that she accidentally recorded the score that should have been 76 as 67. Are these corrected scores significantly different from 65 at the .05 level?
The scores of a random sample of 8 students on a physics test are as follows: 60, 62, 67, 69, 70, 72, 75, and 78. a. Test to see if the sample mean is significantly different from 65 at the .05 level. Report the t and p values. b. The researcher realizes that she accidentally recorded the score that should have been 76 as 67. Are these corrected scores significantly different from 65 at the .05 level?
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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The scores of a random sample of 8 students on a physics test are as follows:
60, 62, 67, 69, 70, 72, 75, and 78.
a. Test to see if the sample mean is significantly different from 65 at the .05
level. Report the t and p values.
b. The researcher realizes that she accidentally recorded the score that
should have been 76 as 67. Are these corrected scores significantly
different from 65 at the .05 level?
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