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A sample of 1000 college students at NC State University were randomly selected for a survey....

A sample of 1000 college students at NC State University were randomly selected for a survey. Among the survey participants, 102 students suggested that classes begin at 8 AM instead of 8:30 AM. The sample proportion is 0.102.

What is the upper endpoint for the 99% confidence interval? Give your answer to three decimal places.

(Note that due to the randomization of the questions, the numbers in this question might be different from the previous question.)

ANSWER: _________

Math   Statistics-And-Probability   
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Answer #1

According to the given information, a sample of 1000 college students at NC State University were randomly selected for a survey. Among the survey participants, 102 students suggested that classes begin at 8 AM instead of 8:30 AM. The sample proportion is 0.102.

Therefore sample proportion ,

In order to find out the 99% confidence interval , at the level of significance, we determine the z critical value from a standard table as

Therefore the 99% confidence interval is as follows:

Therefore, the upper endpoint for the 99% confidence interval is .

(three decimal places)

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