University of phoenix, MTH216 Checkpoint 1 Complete Solution

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Review Quiz: Checkpoint 1 In my experimental study, I used a sample that was larger than the population. No, the statement does not make sense. A sample is a subset of the population and cannot be... larger than the population. I wanted to test the effects of vitamin C on colds, so I gave the treatment group vitamin C and gave the control group vitamin D. The statement does not make sense. The control group should only receive a placebo, not another treatment. An exit poll designed to predict the winner of a local election uses voluntary surveys with every Republican who votes between 9 :00 and 9 : 30a.m. What sources of bias, if any, might this study have? Both selection and participation bias Discuss the differences between the following questions, each of which could be the basis for a statistical study. • What percentage of Internet dates lead to marriage? • What percentage of marriages begin with Internet dates? The questions have different populations. The stacked line chart shows the numbers of college degrees awarded to men and women over time. a. Estimate the numbers of college degrees awarded to men and to women (separately) in 1930 and in 1990. The number of college degrees awarded to men in 1930 was 75,000. The number of college degrees awarded to women in 1930 was 50,000 [Show More]

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