Appliance Dealer
an Appliance Dealer Calculated the Proportion of New

Short Answer

Appliance dealer
An appliance dealer calculated the proportion of new dishwashers sold that required various numbers of service calls to correct problems during the warranty period.The records were: $$\begin{array} { | c | c | } \hline \text { No. of service calls } & \text { Relative frequency } \\\hline 0 & 0.25 \\1 & 0.38 \\2 & 0.30 \\3 & 0.04 \\4 & 0.03 \\\hline\end{array}$$
-Let X be the number of service calls during the warranty period for a dishwasher.What is the probability that there will be exactly one service call?