Question

At the movies: A movie theater is considering a showing of The Princess Bride for a 80's thowback night. In order to ensure the success of the evening, they've asked a random sample of 52 patrons whether they would come to the showing or not. Of the 52 patrons, 22 said that they would come to see the film. Construct a 98% confidence interval to determine the true proportion of all patrons who would be interested in attending the showing.

a) What is the point estimate for the true proportion of interested patrons? (please input a proportion accurate to four decimal places)

b) Complete the interpretation of the confidence interval. Please provide the bounds for the confidence interval in decimal form, accurate to four decimal places, and list the lower bound first.
"We are % confident that the true proportion of patrons interested in attending the showing of The Princess Bride is between  and ."

c) The theater is only willing to show The Princess Bride if they are confident that at least 40% of their patrons would be interested in seeing the film. Should they show it?

Answer 1

The statistical software output for this problem is:

On the basis of above output:

a) Point estimate = 0.4231

b) The correct fillers in blanks will be:

95; 0.2637; 0.5825

c) Since the confidence interval also contain values which are less than 40%, the theater should not show it.