Please help me answer this question. Can you also help me do this in excel with the steps for excel equations? 5

(a) For each tire sold, what is the average cost of the promotion (in \$)? (Round your answer to two decimal places.) (b) What is the probability that Grear will refund more than $25 for a tire? (Round your answer to three decimal places.) \begin{tabular}{l} 11 Model \\ \hline 12 Cost \end{tabular} \begin{tabular}{|r|l|l|l|} \hline Simulation Trial & Lifetime Mileage & Cost & Summary Statistics \\ \hline 1 & & Mean Profit \\ \hline 2 & Probability of \\ \hline 3 & add equal sign here.......AVERAGE(C15:C1014) \\ \hline \#DIV/OI \\ \hline \end{tabular}