Two random samples are taken, one from among first-year students and the other from among fourth-year students at a public university. both samples are asked if they favor modifying the student honor code. a summary of the sample sizes and number of each group answering yes'' are given below: first-years (pop. 1) : fourth-years (pop. 2) : n1=86, n2=96, x1=52x2=54 the rejection region for the standardized test statistic:

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Mathematics

Sparks

23 December, 03:16

Two random samples are taken, one from among first-year students and the other from among fourth-year students at a public university. both samples are asked if they favor modifying the student honor code. a summary of the sample sizes and number of each group answering yes'' are given below: first-years (pop. 1) : fourth-years (pop. 2) : n1=86, n2=96, x1=52x2=54 the rejection region for the standardized test statistic:

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Howard Rodgers · Answer 1

p1=44/88=.50; p2=57/85=.67. Under the null hypothesis of no difference, we pool the data to estimate the common p of (44+57) / (88+85) =.584. The test statistic is (.67-.50) / sqrt[ (.584) (1-.584) (1/88 + 1/85) ]=2.268 (which is stat sig. at a. 095 level).