Problem T {20 marks} The general manager of a chain oF department stores believes that experience is the most important factor in determining the level of success oF a salesperson. To examine this belieF. she records last month's sales [in $1JDms] and the years oF experience of1U randomly selected salespeople. These data are listed below. Assume normality of variables. all l|Calculate the coefficient oF correlation r. Provide an interpretation oF the computed value oF r. [g marks} b} lli:a|cu|ate the coefFicient de determination r squa re {R2}. Provide an interpretation oF the computed value of r square {R2}. (3 marks] :1 Determine the least squares line. Provide an interpretation of your results. {8 marks} Show details ofyour calculations