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In a recent poll of 50 randomly selected adults in the U.S., 14 were able to...

In a recent poll of 50 randomly selected adults in the U.S., 14 were able to name ten or more presidents.


a) What is the sample proportion?


b) What is the margin of error for a 95% confidence interval? (round to three places)


c) What is the 95% confidence interval for this scenario? (round to three places)


d) Would you support 35% as possible population proportion of U.S. adults who can name ten or more presidents? Why or why not?

Math   Statistics-And-Probability   
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