What is the probability that: Exactly 3 homes have computers. (ii) More than 3 homes have computers Calculate: (i) The expected number (i e mean) of homes that have computers. (ii) The variance. (iii) The standard deviation

What is the probability that: Exactly 3 homes have computers. (ii) More than 3 homes have computers Calculate: (i) The expected number (i e mean) of homes that have computers. (ii) The variance. (iii) The standard deviation

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

Paragraph
Styles
8.
A recent study revealed that 60 percent of homes in Greater Portmore have
computers. In a sample of ten (10) homes.
(a) What is the probability that:
Exactly 3 homes have computers.
(ii)
More than 3 homes have computers
(b) Calculate:
(i)
The expected number ie mean) of homes that have
computers.
(ii)
The variance
(iii)
The standard deviation

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