A coin is tossed 3 times. Find the following: (a) the probability that the coin lands heads at least twice. (b) the conditional probability that the coin lands heads at least twice given that the first coin toss lands heads. (c) the conditional probability that the coin lands heads at least twice given that it lands heads at least once.

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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A coin is tossed 3 times. Find the following:
(a) the probability that the coin lands heads at least twice.

(b) the conditional probability that the coin lands heads at least twice given that the first coin toss lands heads.

(c) the conditional probability that the coin lands heads at least twice given that it lands heads at least once.

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