2.55 Shape of cigarette taxes A recent summary for the distribution of cigarette taxes (in cents) among
Question:
2.55 Shape of cigarette taxes A recent summary for the distribution of cigarette taxes (in cents) among the 50 states and Washington, D.C., in the United States reported xQ = 73 and s = 48. Based on these values, do you think that this distribution is bell shaped? If so, why? If not, why not, and what shape would you expect?
2.56 Empirical rule and skewed, highly discrete distribution The table below shows data (from a 2004 Bureau of the Census report) on the number of times 20- to 24-year-old men have been married.
a. Verify that the mean number of times men have been married is 0.16 and that the standard deviation is 0.37.
b. Find the actual percentages of observations within 1, 2, and 3 standard deviations of the mean. How do these compare to the percentages predicted by the empirical rule?
c. How do you explain the results in part b?
Transcribed Image Text:
No. Times Count Percentage 0 8418 84.0 1 1594 15.9 2 10 0.1 Total 10022 100.0
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