UnofficialAP StatisticsUnit 74 points
AP Statistics FRQ: Estimating Average Sleep
A 4-point free-response question in 3 parts. Write your answer, then score it with the rubric; the model answer appears when you are ready.
Question
A random sample of 50 students at a large high school reported a mean of 7.2 hours of sleep on school nights with a sample standard deviation of 1.1 hours.(a) Name an appropriate procedure and check its conditions.(b) Construct a 95% confidence interval for the mean sleep of all students at the school.(c) Interpret the interval in context.
Label each part (a), (b), (c)... and show the work that justifies it. Saved in this browser as you type.