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X is the random variable such that X~ B(15, p) and Var(X) = 2.4. Find the two possible values of p.

X is the random variable such that X~ B(15, p) and Var(X) = 2.4. Find the two possible values of p.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Q2 GX is the random variable such that X ~ B(15, p) and Var(X) = 2.4. Find the two possible values of p. 5) X is the random variable such that X ~ B(n, p), E(X) = 4.8 and Var(X) = 2.88. Find the values of n and p. | The probability that a salesman gets a reply when he knocks on the door of a house is 0.65. Find the probability that in a street of 10 houses he receives: i exactly 5 replies ii at least 5 replies. i How many houses should he visit such that the random variable X = 'number of replies' has a mean of 78? ii What is the variance in this case?
Transcribed Image Text:Q2 GX is the random variable such that X ~ B(15, p) and Var(X) = 2.4. Find the two possible values of p. 5) X is the random variable such that X ~ B(n, p), E(X) = 4.8 and Var(X) = 2.88. Find the values of n and p. | The probability that a salesman gets a reply when he knocks on the door of a house is 0.65. Find the probability that in a street of 10 houses he receives: i exactly 5 replies ii at least 5 replies. i How many houses should he visit such that the random variable X = 'number of replies' has a mean of 78? ii What is the variance in this case?
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