stats questions pt 2
The social network MeWe has collected data on the proportion of users who may switch from Facebook to MeWe in the next year based on their privacy policies. After randomly selecting 1,287 active Facebook users, the researchers at MeWe calculated a 99% CI for
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What was the value of
for this study? Round to 3 decimal places.
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What was the value of MOE (margin-of-error) for this study? Round to 3 decimal places.
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Would the researchers at MeWe be able to use the theory-based approach? In other words, were the validity conditions satisfied to use the theory-based approach? Explain clearly why or why not.
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Nextus, an independent marketing company performed the same study and ended up with the same value for
but used a larger sample size. Which of the following statements are correct? There may be more than one or no correct answers. Hint: You will not be able to calculate the answer directly, use the comparison of the relative sample sizes.
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Assume Nextus and MeWe used the same sample size and ended up with the same value for
. Nextus calculated a 99% CI and MeWe calculated a 95% CI. Which of the following statements are correct? There may be more than one or no correct answers.
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Using MeWe’s 99% CI of (0.093, 0.145). select all of the following answers that are true. There may be more than one or no correct answers.
Flag this QuestionIn 2004, the Kaiser Family Foundation commissioned an extensive survey that investigated the degree to which American youth from ages 8-18 years have access to media. One of the questions asked the random sample of 2032 youths in this age range whether or not they had a television in their bedroom. Of the total sample, 1382 said yes. Answer the following questions using this information.
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Suppose that the researchers have calculated a 90% CI, a 99% CI and a 95% CI for the true proportion of youth aged 8-18 years of age who have a television in their room. Which of the following statements would be true? Circle all that apply. There may be one, more than one, or no correct answers. You do not need to calculate anything.
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Calculate the 2SD CI using the formula
Do not round any values until the final answer. Round final answer to 3 decimal places.
Enter CI: ( , )
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Suppose that in 2014 the Kaiser Family Foundation repeated this study and calculated a 99% theory-based CI of (0.813,0.865). If they had conducted a series of two-sided hypothesis tests using
, which of the following null values would have been rejected? Choose all that would be rejected. There may be none, one, or more than one correct answer.