Question

Please help!! 30 points!!

The American Veterinary Association claims that the annual cost of medical care for dogs averages $100, with a standard deviation of $30, and for cats averages $120, with a standard deviation of $35.
a. what's the expected sum in the cost of medical care for dogs and cats?
b. what's the standard deviation of that sum?

Answer 1

The expected sum is $220 and the standard deviation is $65

Explanation:

In order to get the expected sum you add the two expected sums you are given

To get the standard deviation you add the two given standard deviations