Refer to the Real Estate data, which report information on homes sold in Phoenix,
Arizona, last year.
a. A recent article in The Arizona Republic indicated that the mean selling price of the
homes in the area is more than \$220,000. Can we conclude that the mean selling
price in the Denver area is more than \$220,000? Use the .01 significance level. What
is the p-value?
b. The same article reported the mean size was more than 2,100 square feet. Can we
conclude that the mean size of homes sold in the Denver area is more than 2,100
square feet? Use the .01 significance level. What is the p-value?
c. Determine the proportion of homes that have an attached garage. At the .05 significance
level can we conclude that more than 60 percent of the homes sold in the
Denver area had an attached garage? What is the p-value?
d. Determine the proportion of homes that have a pool. At the .05 significance level, can
we conclude that less than 40 percent of the homes sold in the Denver area had a
pool? What is the p-value?