A National Study Found That the Average Family Spent $422

Multiple Choice

A national study found that the average family spent $422 a month on groceries, with a standard
Deviation of $84. The average amount spent on housing (rent or mortgage) was $1120 a month,
With standard deviation $212. The expected total a family spends on food and housing is 422 + 1120
= $1542. What is the standard deviation of the total?

A) $128
B) cannot be determined
C) $228
D) $148
E) $295