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Unformatted text preview: A survey of 500 students, 298 students like volleyball. 6. [15] Test the hypothesis that the mean before equals the mean after. Use .05 significance level and the following data: Student before after 1 17 10 2 19 7 3 12 9 4 30 21 5 45 46 6 29 23 7. [9] Test the null hypothesis that the mean is less than or equal to 13. Use .05 significance level, a one tail test and the following data: sample size=25; sample mean=16; The population standard deviation=7. 8. [9] Test the null hypothesis that the mean=57. Use a .05 significance level, a two tail test and the following data: sample size=97; sample mean=55; sample st. dev.=8. 9. [15] Test the hypothesis that the proportion of econ majors and the proportion of nursing majors who voted for Bush are equal. Use .05 significance level and a two tail test. major Voted for Bush students econ 21 29 nursing 12 32...
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 Spring '10
 VANDERHOFF
 Statistics, Variance

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