Multiple Choice
Given independent random variables with means and standard deviations as shown,find the mean and standard deviation of the variable
+
.
A) μ = 28,σ = 4.24
B) μ = 74,σ = 8.54
C) μ = 28,σ = 6
D) μ = 28,σ = 2.45
E) μ = 74,σ = 11
Correct Answer:

Verified
Correct Answer:
Verified
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