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Question - Studying for class. Refer to the previous exercise. Overall, students reported preparing for class an average of 706 minutes per week with a standard deviation of 526 minutes. Students also reported spending an average of 106 minutes per day on Facebook with a standard deviation of 93 minutes.
(a) Construct a 95% confidence interval for the average number of minutes per week a student prepares for class.
(b) Construct a 95% confidence interval for the average number of minutes per week a student spends on Facebook.
(c) Explain why you might expect the population distributions of these two variables to be highly skewed to the right. Do you think this fact makes your confidence intervals invalid? Explain your answer.
According to an article in Travel and Leisure, every person in a small study of sleep during vacation was found to sleep longer than average during the first.
Discuss and critique their methodology, results, and discussion. For example, was an appropriate sampling method used to support their results?
While Caffarella and Barnett (2000) indicate that critique is the most influential element in helping learners produce a better writing product, critique can be an emotional event. Cameron et al. (2009) note that it proved helpful in their worksho..
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Find a 95% confidence interval for the true percent of movie goers in Flagstaff who have bought popcorn on their last visit.
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the body mass index bmi was recorded for 40 males. find the 5-number summary that would be used for a box plot of this
A computer password consists of four characters. The characters can be one of the 26 letters of the alphabet. Each character may be used more than once.
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Suppose your Statistics professor reports test grades as z-scores, and you got a score of 2.20 on the midterm exam. Write a sentence explaining what that means.
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