A question on the General Social Survey was, When you drink, how many drinks do you have?
Question:
(a) What type of variable is "number of drinks"?
(b) Draw a histogram of the data and comment on the shape of the distribution.
(c) Determine the mean and standard deviation for number of drinks.
(d) What is the mode number of drinks?
(e) What is the probability a randomly selected individual consumes two drinks?
(f) Would it be unusual to observe an individual who consumes at least eight drinks? Why?
(g) Describe the shape of the distribution of the sample mean number of drinks. What is the source of variability in the sampling distribution?
(h) Construct a 95% confidence interval for the mean number of drinks. Interpret this interval?
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Related Book For
Statistics Informed Decisions Using Data
ISBN: 9780134133539
5th Edition
Authors: Michael Sullivan III
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