Use 0.05 level of significance to test the claim that Method B is more effective. Assume that the populations sampled can be approximated closely with normal distribution having the same variance.
Use 0.05 level of significance to test the claim that Method B is more effective. Assume that the populations sampled can be approximated closely with normal distribution having the same variance.
College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter8: Sequences, Series, And Probability
Section8.7: Probability
Problem 6E: List the sample space of each experiment. Tossing three coins
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Question
As a part of an industrial training program, some trainees are instructed by Method A, which is
straight teaching-machine instruction, and some are instructed by Method B, which also involves
the personal attention of an instructor. Random samples of size 10 are taken from large groups
of trainees instructed by each of these two methods, and the scores they obtained in an
appropriate achievement test are shown in Table 5. Use 0.05 level of significance to test the claim
that Method B is more effective. Assume that the populations sampled can be approximated
closely with
Method A | 71 | 75 | 65 | 69 | 73 | 66 | 68 | 71 | 74 | 68 | |
Method B | 72 | 77 | 84 | 78 | 69 | 70 | 77 | 73 | 65 | 75 |
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