7.14 The average American family of four spends $5000 per year on food prepared at home. Assuming a normal distribution with a standard deviation of $1000 and a randomly selected American family of four, what is the probability that the family’s annual spending for food prepared at home will be: Source: “Business Briefing,”

Pittsburgh Tribune-Review, July 5, 2009, p. E1.

a. more than $8000?

b. between $5000 and $7000?

c. less than $6000?

d. between $3000 and $6000?