# Suppose that 06 of each of two populations possess a

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82. Suppose that .06 of each of two populations possess a given characteristic. Samples of size 400 are randomly drawn from each population. The probability that the difference between the first sample proportion which possess the given characteristic and the second sample proportion which possess the given characteristic being more than +.03 is _______. M A. 0.4943 Calc B. 0.9943 C. 0.0057 D. 0.5057 B 83. Suppose that .06 of each of two populations possess a given characteristic. Samples of size 400 are randomly drawn from each population. The standard
334 Test Bank deviation for the sampling distribution of differences between the first sample proportion and the second sample proportion (used to calculate the Z score) is _______. M 84. Suppose that .06 of each of two populations possess a given characteristic. Samples of size 400 are randomly drawn from each population. What is the
probability that the differences in sample proportions will be greater than 0.02? M 85. A statistician is being asked to test a new theory that the proportion of population A possessing a given characteristic is greater than the proportion of population B
possessing the characteristic. A random sample of 600 from population A has been taken and it is determined that 480 possess the characteristic. A random sample of 700 taken from population B results in 350 possessing the characteristic. The calculated Z for this is _______. M
A 86. If you are testing a hypothesis that two population proportions are the same, you _______. M A. should calculate a "pooled" value for the sample proportion Term B. should not calculate a "pooled" value for the sample proportion C. use a sample proportion of zero D. always use a 0.05 level of significance
Chapter 10: Statistical Inferences for Two Populations 335 A 87. A researcher is interested in estimating the difference in two population proportions. A sample of 400 from each population results in sample proportions of .61 and .64. The point estimate of the difference in the population proportions is _______. E 0 88. A researcher is interested in estimating the difference in two population
proportions. A sample of 400 from each population results in sample proportions of .61 and .64. A 90% confidence interval for the difference in the population proportions is _______. M