(a) If E(X) = 12.77, find the values of ‘*’ and ‘***’. (b) Hence, determine P(1. 5 ≤ X < 5) The probability distribution of the number of siblings, X, per student, is shown in the following table:x = xP(X = x)01***4*0.150.400.1350.02

The probability distribution is:01***45*0.150.400.130.02

Answered: (a) If E(X) = 12.77, find the values of…

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(a) If E(X) = 12.77, find the values of ‘*’ and ‘***’. (b) Hence, determine P(1. 5 ≤ X < 5)

Calculus For The Life Sciences

2nd Edition

ISBN:9780321964038

Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Chapter12: Probability

Section12.4: Discrete Random Variables; Applications To Decision Making

Problem 1YT

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Question

(a) If E(X) = 12.77, find the values of ‘*’ and ‘***’.
(b) Hence, determine P(1. 5 ≤ X < 5)

The probability distribution of the number of siblings, X, per student, is shown in the following table:
x = x
P(X = x)
0
1
***
4
*
0.15
0.40
0.13
5
0.02

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