Tree and Venn Diagrams · Exercise 12
Answer these questions using probability rules. Do NOT use the contingency table. A total of 6,481 new vehicles were purchased over a monthly time period in a certain county. These purchases will be our population. Of these purchases, 36% were made by people in their twenties, and 42% were purchases of sedans. 20% of purchases were for sedans purchased by people in their twenties.
(a) Find P(Person is in their twenties).
(b) Find P(Person purchased a sedan).
(c) Find P(Person is in their twenties GIVEN person purchased a sedan)
OpenStax, Introductory Statistics 2e · §3.5 Tree and Venn Diagrams · Exercise 12
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