A well-balanced coin is tossed six times: a) What is the probability of getting exactly five heads? b) What is the probability of getting at least four heads? c) What is the expected number of faces? d) What is the variance of the random variable representing the number of faces obtained?

A well-balanced coin is tossed six times: a) What is the probability of getting exactly five heads? b) What is the probability of getting at least four heads? c) What is the expected number of faces? d) What is the variance of the random variable representing the number of faces obtained?

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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Question

A well-balanced coin is tossed six times:
a) What is the probability of getting exactly five heads?
b) What is the probability of getting at least four heads?
c) What is the expected number of faces?
d) What is the variance of the random variable representing
the number of faces obtained?

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