statistics Assume that you are doing a one tailed hpothesis

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 h\\pothesis 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 modes

Solution

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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