Hypothesis Testing(1)(1)

# Hypothesis Testing(1)(1) - Hypothesis Testing 1 Childhood...

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Hypothesis Testing 1. Childhood participation in sports improves self-esteem. A sample of 100 adolescents with a history of group participation is given a self- esteem questionnaire and score a mean of 44. The general population of adolescents scores a mean of 40 with a standard deviation of 12. Does the sample provide evidence that sports participation improves self- esteem. Use a two tailed test at alpha = .05.

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This problem has been slightly changed 2. Do husbands watch more television than wives? A sample of 20 husbands and 20 wives kept track of their television watching for a two week period. At the end of two weeks the number of hours watched by husbands was compared to the number of hours watched by wives. Wives watched an average of 3.4 more hours than husbands with a standard error of the difference of 1.5 hours. Test for mean differences using a .01 alpha level and two tails.
3. Some speculate that REM sleep associated with dreaming plays a role In memory and learning. For a sample of n=16 college students REM activity monitoring produced a mean of 143. The general population of college students have a mean of 110 and a standard deviation of 50. Do the data support the hypotheses that REM activity during exams is higher than during non-exam periods. Use a one-tailed test at alpha = .01.

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## This note was uploaded on 03/29/2012 for the course MAN 320F taught by Professor Passovoy during the Spring '08 term at University of Texas.

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Hypothesis Testing(1)(1) - Hypothesis Testing 1 Childhood...

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