Assessment Brief
1) In a random sample of 30 people who rode a roller coaster one day, the mean wait time is 46.7 minutes with a standard deviation of 9.2 minutes. In a random sample of 50 people who rode a Ferris wheel the same day, the mean wait time is 13.3 minutes with a standard deviation of 1.9 minutes. Construct a 99% confidence interval for the difference between the mean wait times of everyone who rode both rides.a)Β (30.5, 36.3)b)Β (31.7, 35.1)c) (29.0, 37.8)d) (28.7, 38.1)
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