Question

Listening to music while taking a test may be relaxing or distracting. We test 49 participants while listening to music, and they produce an X = 54.36. The mean of the population taking this test without music is 50 (aX = 12).
(a) Is this a one tailed or two-tailed test? Why?
(b) What are our H0 and Ha?
(c) Compute zobt.
(d) With a = .05, what is zcrit?
(e) Do we have evidence of a relationship in the population? If so, describe the relationship.


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  • CreatedSeptember 22, 2015
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