Chapter 10 Quiz

# Chapter 10 Quiz - Chapter 10 Quiz If the test statistic for...

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Chapter 10 Quiz If the test statistic for testing the hypothesis that the difference between two population proportions is greater than zero using data from large samples is 1.38, then __________. the null hypothesis is rejected at 0.100 significance level the null hypothesis is rejected at 0.001 significance level the null hypothesis is rejected at 0.005 significance level the null hypothesis is rejected at 0.010 significance level Restaurateur Denny Valentine is evaluating two sites, Raymondville and Rosenberg, for his next restaurant. He wants to prove that Raymondville residents (population 1) dine out more often than Rosenberg residents (population 2). Denny commissions a market survey to test this hypothesis. The market researcher used a random sample of 64 families from each suburb, and reported the following: X 1 = 15 times per month and X 2 = 14 times per month. Assume that σ 1 = 2 and σ 2 = 3. With α = .01, the critical z value is _________________. - 1.96 2.3 3 1.9 6 - 2.33 - 1.33 Restaurateur Denny Valentine is evaluating two sites, Raymondville and Rosenberg, for his next restaurant. He wants to prove that Raymondville residents (population 1) dine out more often than Rosenberg residents (population 2). Denny commissions a market survey to test this hypothesis. The market researcher used a random sample of 64 families from each suburb, and reported the following: X 1 = 15 times per month and X 2 = 14 times per month. Assume that σ 1 = 2 and σ 2 = 3. With α = .01, the observed z value is _________________. 12.8 1 2.2 2 3.5 8 1.9

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6 4.9 2 Restaurateur Denny Valentine is evaluating two sites, Raymondville and Rosenberg, for his next restaurant. He wants to prove that Raymondville residents (population 1) dine out more often than Rosenberg residents (population 2). Denny commissions a market survey to test this hypothesis. The market researcher used a random sample of 64 families from each suburb, and reported the following: X 1 = 15 times per month and X 2 = 14 times per month. Assume that σ 1 = 2 and σ 2 = 3. With α = .01, the appropriate decision is _________________. reject the alternate hypothesis n 1 = n 2 = 64 fail to reject the null hypothesis μ 1 - μ 2 = 0 do nothing reject the null hypothesis σ 1 2 < σ 2 2 accept the alternate hypothesis μ 1 - μ 2 > 0 Lucy Baker is analyzing demographic characteristics of two television programs, COPS (population 1) and 60 Minutes (population 2). Previous studies indicate no difference in the ages of the two audiences. (The mean age of each audience is the same.) Lucy plans to test this hypothesis using a random sample of 100 from each audience. Her alternate hypothesis is ____________. μ 1 - μ 2 ≠ 0 μ 1 - μ 2 = 1 μ 1 - μ 2 < 0 μ 1 - μ 2 > 0 μ 1 - μ 2 = 0 Lucy Baker is analyzing demographic characteristics of two television programs, COPS (population 1) and 60 Minutes (population 2). Previous studies indicate no difference in the ages of the two audiences. (The mean age of each audience is the same.) Her staff randomly selected
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## This note was uploaded on 07/25/2011 for the course DESI 3403 taught by Professor Black during the Fall '10 term at University of Houston.

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Chapter 10 Quiz - Chapter 10 Quiz If the test statistic for...

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