Questions from Business Statistics

Q: Funding for many schools comes from taxes based on assessed values of

Funding for many schools comes from taxes based on assessed values of local properties. People homes are assessed higher if they have extra features such as garages and swimming pools. Assessment reco...

Q: Traffic checks on a certain section of highway suggest that 60%

Traffic checks on a certain section of highway suggest that 60% of drivers are speeding there. Since 0.6—0.6=0.36, the Multiplication Rule might suggest that there a 36% chance that two vehicles in a...

Q: Although it hard to be definitive in classifying people as right-

Although it hard to be definitive in classifying people as right- or left-handed, some studies suggest that about 14% of people are left-handed. Since 0.14—0.14=0.0196, the Multiplication Rule might s...

Q: The following data relate traffic Density (measured as number of cars

The following data relate traffic Density (measured as number of cars per mile) and the average Speed of traffic (in mph) on city highways. The data were collected at the same location at 10 different...

Q: Since 1985, average mortgage interest rates have fluctuated from a low

Since 1985, average mortgage interest rates have fluctuated from a low of nearly 3% to a high of over 14%. Is there a relationship between the amount of money people borrow and the interest rate that...

Q: For high school students graduating in 2013, college admissions to the

For high school students graduating in 2013, college admissions to the nation most selective schools were the most competitive in memory. Harvard accepted about 5.8% of its applicants, Dartmouth 10%,...

Q: In Exercise 25, we saw that in 2013 Harvard accepted about

In Exercise 25, we saw that in 2013 Harvard accepted about 5.8% of its applicants, Dartmouth 10%, and Penn 12.1%. Jorge has applied to all three. He figures that his chances of getting into at least o...

Q: A consumer organization estimates that over a 1-year period 17

A consumer organization estimates that over a 1-year period 17% of cars will need to be repaired only once, 7% will need repairs exactly twice, and 4% will require three or more repairs. What is the p...

Q: In a large introductory statistics lecture hall, the professor reports that

In a large introductory statistics lecture hall, the professor reports that 55% of the students enrolled have never taken a calculus course, 32% have taken only one semester of calculus, and the rest...

Q: Consider again the auto repair rates described in Exercise 27. If

Consider again the auto repair rates described in Exercise 27. If you own two cars, what is the probability that 1. neither will need repair? 2. both will need repair? 3. at least one car will need re...