Please help answer question 1.

Section 5: Homework With economical concerns being so great, many people are no longer purchasing new vehicles, but are instead keeping their vehicles for a longer period of time, until they no longer work. The Amer- ican Automobile Association is interested in estimating the average age of vehicles for Americans. A random sample of thirty-five Americans was obtained. The average age of their vehicles was 6.2 years with standard deviation 1.2. Estimate with 99% confidence the average age of vehicles for Americans. HW 2. Many people have heard of the "Freshmen 20," referring to the belief that many college freshmen will gain 20 lbs. their freshmen year in school. Administrators were interested in knowing if this is really true. A random sample of thirty freshmen (at the end of their freshmen year) was obtained. The amount of weight gained by the freshmen is listed below. In put into Jmpro 21.8 20.6 21 20.2 19.2 17.8 22.8 20.2 22 19.4 18.6 18.2 20 19 21 23 19.6 19 24.6 19.6