2. The Society of Health Organization claims that the annual cost of medical care for
adults averages $115 with a standard deviation of $20, and for children averages $180
with a standard deviation of $40. Assume medical care costs for adults and children are
independent.
a. What should a single parent with one child expect to pay for medical care each
year?
b. What is the standard deviation?
c. What should a couple with two kids expect to pay for medical care each year?
What is the standard deviation?