Statistics > QUESTIONS & ANSWERS > University of Phoenix - QNT275>QNT 275 Final Exam.(WITH ANSWERS)100% (All)

University of Phoenix - QNT275>QNT 275 Final Exam.(WITH ANSWERS)100%

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1. If you divide the number of elements in a sample with a specific characteristic by the total number of elements in the sample, the dividend is the: • sample distribution • sample mean • s... ampling distribution • sample proportion 2. The mean of a discrete random variable is its: • box-and-whisker measure • upper hinge • expected value • second quartile 3. Two paired or matched samples would imply that: • data are collected on two variables from the elements of two independent samples • data are collected on one variable from the elements of two independent samples • two data values are collected from the same source (elements) for two independent samples • two data values are collected from the same source (elements) for two dependent samples 4. In a survey regarding job satisfaction, 574 in a sample of 934 female job-holders stated that they are satisfied with their jobs, while 500 in a sample of 755 male jobholders stated that they are satisfied with their jobs. The null hypothesis is that the proportions of all female and male job-holders who are satisfied with their jobs are the same. The alternative hypothesis is that the proportion of female job-holders who are satisfied with their jobs is lower than the proportion of male job-holders stated who are satisfied with their jobs. The significance level is 2.5%. What is the critical value of z for the hypothesis test? [Show More]

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