A developer wants to know if the houses in two different neighborhoods were built at roughly the same time. She takes a random sample of six houses from each neighborhood and finds their ages from local records. The accompanying table shows the data for each sample (in years). Complete parts a through e below.

Neighborhood 1 Neighborhood 2 52 42 48 45 53 53 68 49 66 47 43 58

a) Find the sample means for each neighborhood.

y1=enter your response here

years

y2=enter your response here

years