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A random sample of 100 adults was selected. 80 adults in the sample said they were non-smokers
1. What conditions must be satisfied in order to construct a confidence interval on binomial parameter p?
2. Construct a 95 percent confidence interval for the population proportion, p, of non-smokers.
3. Interpret your answer to question 2, i.e., what is your conclusion?
4. Is 0.75 a plausible value for the population proportion, p, of nonsmokers? Explain.
5. Suppose we want a 99% confidence interval on the population proportion, p, of non-smokers. Will the 99% C.I be wider or narrower than the 95% C.I.? Explain.
Assume that these two ways to buy tickets are independent. The probability that someone who tries to buy tickets through the Internet AND by phone will obtain tickets is equal to?
Classifcation Which of the following are continuous variables and which are discrete?
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