Question

Find the expected value of each random variable. a) x | 15 | 30 | 45 P(X = x) | 0.2 | 0.5 | 0.3 b) x | 3 | 5 | 7 | 9 P(X = x) | 0.2 | 0.3 | 0.1 | 0.4 a) The expected value is . (Type an integer or a decimal. Do not round.)

          Find the expected value of each random variable.
a)
x | 15 | 30 | 45
P(X = x) | 0.2 | 0.5 | 0.3
b)
x | 3 | 5 | 7 | 9
P(X = x) | 0.2 | 0.3 | 0.1 | 0.4
a) The expected value is .
(Type an integer or a decimal. Do not round.)

Added by Brittany T.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

Instant Answer

Solved by Expert Madhur L

08/01/2023

Step 1

2 = 3 30 * 0.5 = 15 45 * 0.3 = 13.5 Show more…

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Find the expected value of each random variable. a) x | 15 | 30 | 45 P(X=x) | 0.2 | 0.5 | 0.3 a) The expected value is . (Type an integer or a decimal. Do not round.)