BIOL499A Chapter Notes - Chapter 22: Normal Distribution, Confidence Interval, Test Statistic
13 Feb 2014
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Large-sample confidence intervals for comparing two proportions, Suppose a sample of 300 urban adult residents of alberta revealed 63 who favored increasing the highway speed limit from 110 km/h to 120 km/h, whereas a sample of 250 rural residents yielded 75 who favored the increase. , when n is large, the test statistic is p . 2 approximate confidence interval for difference of two population p. Example 22. 1: a sample of 100 females was collected from ethnic group a and a sample of 100 from ethnic group b. Each female was asked, did you get married before you were 19?"" , is given by: (a) establish a 90% confidence interval for difference. B (b) is there enough evidence to conclude that the proportion of females who got married before 19 is higher for ethnic group a than for group: use. Example 22. 2: the 1958 detroit area study was an important sociological investigation of the influence of religion on everyday life.
