Question

In order to find out the probability that a student will bring a car to campus,...

In order to find out the probability that a student will bring a car to campus, 100 students are polled. Of those students, 85 have cars to bring to campus.

1. For the 95% confidence level, find the error, E, for the confidence interval (round your answer to two decimal places). **ANSWER IS NOT .04

2.Which of the following is the correct interpretation of the confidence interval? (Select All That Apply)

a) We are 95% confident the proportion of students who will bring their car to campus is larger than .78.

b) We are 95% confident the proportion of students who will bring their car to campus is between .78 and .92.

c) We are 95% confident that the probability that a random student will bring a car to campus is between .78 and .92

d) The proportion of students who will bring their cars to campus is between .78 and .92.

Math   Statistics-And-Probability   
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Answer #1

1.

2.

b) We are 95% confident the proportion of students who will bring their car to campus is between .78 and .92.

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