Today Five Years Ago x ̄ 84.00 86.00 σ 2 119.5 52 n 53 49 The point estimate for the difference between the means of the two populations (Today – Five Years Ago) is _____. -2.00 An insurance company selected samples of clients under 18 years of age and over 18 and recorded the number of accidents they had in the previous year. The results are shown below. ...
