# Question: As mentioned in Exercise 7 22 according to the American Automobile

As mentioned in Exercise 7.22, according to the American Automobile Association’s 2012 annual report Your Driving Costs, the cost of owning and operating a four-wheel drive SUV is $11,350 per year (USA TODAY, April 27, 2012). Note that this cost includes expenses for gasoline, maintenance, insurance, and financing for a vehicle that is driven 15,000 miles a year. Suppose that the distribution of such costs of owning and operating all four-wheel drive SUVs has a mean of $11,350 with a standard deviation of $2390. Find the probability that for a random sample of 400 four-wheel drive SUVs, the average cost of owning and operating is

a. More than $11,540

b. Less than $11,110

c. $11,250 to $11,600

a. More than $11,540

b. Less than $11,110

c. $11,250 to $11,600

## Answer to relevant Questions

The times that college students spend studying per week have a distribution that is skewed to the right with a mean of 8.4 hours and a standard deviation of 2.7 hours. Find the probability that the mean time spent studying ...As mentioned in Exercise 7.33, among college students who hold part-time jobs during the school year, the distribution of the time spent working per week is approximately normally distributed with a mean of 20.20 hours and a ...A population of N = 4000 has a population proportion equal to .12. In each of the following cases, which formula will you use to calculate σp̂ and why? Using the appropriate formula, calculate σp̂ for each of these ...According to a poll, 55% of Americans do not know that GOP stands for Grand Old Party (Time, October 17, 2011). Assume that this percentage is true for the current population of Americans. Let p̂ be the proportion in a ...According to a poll, 55% of Americans do not know that GOP stands for Grand Old Party (Time, October 17, 2011). Assume that this percentage is true for the current population of Americans. Let p̂ be the proportion in a ...Post your question