question archive The manager of Hudson Auto Repair wants to advertise one price for an engine tune-up, with parts included
The manager of Hudson Auto Repair wants to advertise one price for an engine tune-up, with parts included
Subject:Computer SciencePrice: Bought3
The manager of Hudson Auto Repair wants to advertise one price for an engine tune-up, with parts included. Before he decides the price to advertise, he needs a good estimate of the average cost of tune-up parts. A sample of 20 customer invoices for tune-ups has been taken and the costs of parts, rounded to the nearest dollar, are listed below.91 78 93 57 85 52 99 80 105 62101 74 62 68 97 73 77 65 80 100Provide a 95% confidence interval estimate of the mean cost of parts per tune-up for all of the tune-ups performed at Hudson Auto Repair.
