XUN -7.1 IS HERE ONLY TO GIVE YOU BACKGROUND FOR QUESTION 7.1 Apartment rents.

XUN –7.1 IS HERE ONLY TO GIVE YOU BACKGROUND FOR QUESTION 7.67.1   Apartment rents. You randomly choose 15 unfurnished one-bedroom apartments from a large   number of advertisements in your   localnewspaper. You calculate that their mean monthly rent is $570 and their standard deviation is $105.(a) What is the standard error of the mean? (b) What are the degrees of freedom for a one-sample t statistic?  FIGURE 7.1 Density curves for the standard Normal, t(10), and t(5) distributions. All are symmetric with center 0. Thet distributions have moreprobability in the tails than thestandard Normal distribution