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In a recent poll of 100 randomly selected adults in the United States, 82 had obtained...

In a recent poll of 100 randomly selected adults in the United States, 82 had obtained a high school diploma. Complete the steps below:

a) What is the sample proportion?

b) How are the conditions of the Central Limit Theorem met for this scenario?

c) What is the margin of error for a 95% confidence interval? Round to 3 places. The margin of error formula is 1.96p^(1−p^)n.

d) What is the 95% confidence interval? Round to 3 places.  

e) Would you support 90% as a possible population proportion of U.S. adults who have received a high school diploma? Why or why not? (Use your confidence interval.)

Math   Statistics-And-Probability   
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