Question: Problem 3:Confidence Interval The data in the Statcrunch file Exam 3_Problem 3 contains a random sample of Highline College students who were asked:How many hours

Problem 3:Confidence Interval

The data in the Statcrunch file Exam 3_Problem 3 contains a random sample of Highline College students who were asked:How many hours per week do you work?

a)What is the sample size?

b)Make a histogram of the sample data using a width of 10 hours. Label each bar of the histogram with its frequency.

c)Use the sample data to compute the 95% confidence interval for the population proportion of Highline College students who work less than 20 hours per week. For full credit, use statistical concepts related to confidence intervals, and interpret your results (I am 95% confidence that. ..) check that the assumptions are met for confidence intervals and compute the margin of error.

(please show work).

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