A consumer organization inspecting new cars found that many had appearance defects​ (dents, scratches, paint​ chips, etc.). While none had more than three of these​ defects, 8​% had​ three, 16​% had​...

A consumer organization inspecting new cars found that many had appearance defects​ (dents, scratches, paint​ chips, etc.). While none had more than three of these​ defects, 8​% had​ three, 16​% had​ two, and 26​% had one defect. Find the expected number of appearance defects in a new car and the standard deviation.