Q7. During recent seasons, Major League Baseball has been criticized for the length of the

games. A report indicated that the average game lasts 3 hours and 30 minutes. A sample

of 17 games revealed the following times to completion. (Note that the minutes have

been changed to fractions of hours, so that a game that lasted 2 hours and 24 minutes

is reported at 2.40 hours.)

Q8.

The amount of income spent on housing is an important component of the cost of living.

The total costs of housing for homeowners might include mortgage payments, property

taxes, and utility costs (water, heat, electricity). An economist selected a sample of

20 homeowners in New England and then calculated these total housing costs as a percent

of monthly income, five years ago and now. The information is reported below. Is it

reasonable to conclude the percent is less now than five years ago?