Multiple Choice
The amount of money that Maria earns in a week is a random variable with a mean of $970 and a standard deviation of $25.The amount of money that Elena earns in a week is a random variable with a mean of $860 and a standard deviation of $10.How much more do you expect Maria to earn in a week than Elena? What is the standard deviation of this difference? Assume that Maria's earnings are independent of Elena's earnings.
A) $1830,$35
B) $110,$26.93
C) $110,$22.91
D) $110,$15
E) $1830,$26.93
Correct Answer:
Verified
Correct Answer:
Verified
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