statistics Assume that you are doing a one tailed h>pothesis test 10 see if the
ID: 3378851 • Letter: S
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statistics Assume that you are doing a one tailed h>pothesis test 10 see if the ???????? of marketing majors (sample size - 76) who get jobs in their field right out of coücgt greater than the proportion of accounting majors (sample sire " 120) who get jobs in their field right out of college is greater than the proportion of accounting majors (sample size = 120 ) who get jobs right after college. Which of the following statements is most correct? The appropriate test is a paired Z-tesi The appropriate test is an independent samples t-test assuming unequal varience. The appropriate test is a Z-test since we use the Z distribution when testing proportions The appropriate test is an independent samples t-test assuming equa! Variances For a left tailed, two sample hpothesis test with a given value of a and for a sample size of 20. the critical value based on the Z-distribution will be negative and: Equal to the critical value based on the t-distribution B Smaller (farther from 0) than the critical value based on the t-distribution Larger (closer to 0) than the critical value based on the t-distribution You need to specify the Type I error level to answer this question The lengths of mayfly nymphs (Order Ephemeroptcra) in thçClmuxiRivCTare assumed to be nonnalh distributed ith a mean of0.5 inches and a standard deviation 0.1 inches. What proportion of mayflies would you expect to be betw een anc inches'? Approximately. 0.50 0.68 0.95 0.99 In an ANOVA ,when would the F test static be one? When SSA and SSE are equal Whec MSA and MSE are equal. when the numerator and denominator degrees of freedom are equal. The F 'test statistic cannot ever be one since it's right skewed. which of the following is a characteristic of the F distribution'? A. It is non-negative 3. It's negative for degrees of freedom less than 20. It is a discrete distribution It is has two modesExplanation / Answer
16. OPTION C. We use z test because in proportions, we usually have large sample sizes.
17. OPTION B. Smaller than the critical value based on t distirbution. This is so because the t distribution "plays it safe", that is, tries to overestimate what to take care of what the sample doesn't know about the population.
18. OPTION B. 0.68, as they are 1 standard deviation from the mean, by empirical rule.
19. OPTION B, as F = MSA/MSE.
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