3. The ratio of adult males to adult females living in a certain town is 17:18, and of these adults, independent of gender, do not have a driving license. a. Show that the probability that a randomly selected adult in this town is male and has a 17 driving license is equal to 45' b. Find the probability that, in a randomly selected sample of 25 adults from this town, from 8 to 10 inclusive are females who have a driving license.

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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3. The ratio of adult males to adult females living in a certain town is 17:18, and of these adults,
independent of gender, do not have a driving license.
a. Show that the probability that a randomly selected adult in this town is male and has a
driving license is equal to
17
45
b. Find the probability that, in a randomly selected sample of 25 adults from this town, from
8 to 10 inclusive are females who have a driving license.
Transcribed Image Text:3. The ratio of adult males to adult females living in a certain town is 17:18, and of these adults, independent of gender, do not have a driving license. a. Show that the probability that a randomly selected adult in this town is male and has a driving license is equal to 17 45 b. Find the probability that, in a randomly selected sample of 25 adults from this town, from 8 to 10 inclusive are females who have a driving license.
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