Paint-Drying Robots. How long it takes paint to dry can have animpact on the production capacity of a business. In May 2018,Deal’s Auto Body & Paint in Prescott, Arizona, invested in apaintdrying robot to speed up its process (The Daily Courierwebsite, https://www.dcourier.com/photos/2018/may/26/984960336/).An interesting question is, “Do all paintdrying robots have thesame drying time?” To test this, sup pose we sample five dryingtimes for each of different brands of paintdrying robots. The timein minutes until the paint was dry enough for a second coat to beapplied was recorded. The following data were obtained.
Robot 1: 128 137 135 124 141
Robot 2: 144 133 142 146 130
Robot 3 : 133 143 137 136 131
Robot 4: 150 142 135 140 153
At the a = .05 level of significance, test to see whether the meandrying time is the same for each brand of robot
