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Unformatted text preview: c) The confidence interval dos not include the mean of the general population (which was 75). Thus, you can reject the null hypothesis that the two populations are the same. #4. a) 95% confidence interval: Z = +/ 1.96; Standard error of the mean = 4.91 Lower limit = (1.96)(4.91) + 100 = 90.38 Upper limit = (+1.96)(4.91) + 100 = 109.62 b) 99% confidence interval: Z = +/ 2.57; Standard error of the mean = 4.91 Lower limit = (2.57)(4.91) + 100 = 87.38 Upper limit = (+2.57)(4.91) + 100 = 112.62...
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This note was uploaded on 04/29/2010 for the course PSYCH 315 taught by Professor Afroditipanagopoulos during the Winter '10 term at Concordia Canada.
 Winter '10
 AfroditiPanagopoulos

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