EC315 Practice Week 7 Quiz

# EC315 Practice Week 7 Quiz - Week 7 Practice Quiz In a...

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Week 7 Practice Quiz 1. In a two-sample test of means for independent samples, the equal sign always appears in A. The null hypothesis. B. The alternate hypothesis. C. The upper tail of the test statistic. D. None of the above. The correct answer is a. The equality sign always is in the null hypothesis. The alternate hypothesis will never have an equal sign. The alternate hypothesis will include >, <, or equal to. 2. In a two-sample test of means for independent samples, we use the z distribution when A. The population sta deviations are equa B. Both populations have at least 4000 ob C. Both population standard deviations a D. n π and n (1- π ) are both greater than 5. The correct answer is c. Answer a is not a necessary condition, the number in the population does not matter, and d refers to tests of proportions, not means. 3. Which of the following is a requirement for a two-sample test of proportions? A.

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EC315 Practice Week 7 Quiz - Week 7 Practice Quiz In a...

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