For 15-21, suppose 26% of people at an amusement park go on a certain ride. A
survey asks a random sample of 50 people
their opinion of the ride as they leave the
park. Round percentages to the nearest
tenth
15. What is the mean of the sampling
distribution, rounded to the nearest
hundredth?
16. What is the standard error of the
proportion, rounded to the nearest
thousandth?
17. Show the two calculations you need to
make to be sure that the sampling
distribution is normal
18. What is the probability that at most 25%
of the people in the sample went on the
nde?
19. What is the probability that at most 15
people in the sample went on the ride?
20. What is the probability that the sample
includes more than 10 people who went
on the ride?
21. What is the interval that captures 95% of
the proportions for random samples of 50
people who leave the park?