Homework Answers
From given table,
Total = 126 + 54 + 324 + 396 = 900
(a)
P(tattoo) = (126 + 54) / 900 = 180 / 900 = 0.20
(b)
P(tattoo | age 18-29) = 126 / (126 + 324) = 0.28
(c)
P((tattoo | age 30-50) = 54 / (54 + 396) = 0.12
(d)
P(age 18-29 | tattoo) = 126 / (126 + 54) = 0.7
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An article included results from a survey of adults aged 18 to 50. The accompanying data...
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