Explain the difference between the family confidence level and the individual confidence level.

Your statistics instructor claims that 60 percent of the students who take her Elementary Statistics class go through life feeling more enriched. For some reason that she can't quite figure out, most people don't believe her. You decide to check this out on your own. You randomly survey 64 of her past Elementary Statistics students and find that 34 feel more enriched as a result of her class. Construct a 95% confidence interval for the true mean or proportion. Round to the nearest hundredth (2 decimal places). (  ,  )

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For the same sample statistics, which level of confidence would produce the widest confidence interval? Explain your reasoning. Choose the correct answer below. 99%, because as the level of confidence increases, ze decreases. 99%, because as the level of confidence increases, Z increases. O 90%, because as the level of confidence decreases, ze increases. 90%, because as the level of confidence decreases, Zc decreases.

View both photos attached and answer the question below.   Estimate the net sale in future promotions, 95% confidence intervals for the population means were constructed. See output below. Explain and compare the confidence interval for net sales for Promotional and Regular customers. Make sure to clearly describe the confidence intervals in the context of the problem.

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what is the confidence coefficient of the following confidence levels? 99% Confident? 90% Confident?

Public Policy Polling recently conducted a survey asking adults across the U.S. about music preferences. When asked, 80 of the 571 participants admitted that they have illegally downloaded music. Without performing any calculations, describe how the confidence interval would change if the confidence level changed from 99% to 90%.