A random sample of 48 devices was selected from a warehouse and in turn randomly divided into three groups of 16. Group A was the control group so nothing was done to the devices. Group B devices were submerged in water for 15 minutes. Group C devices were dropped to a cement floor from 5 feet. Each device was then evaluated for performance (the lower the score the better). Does there appear to be any measurable effect of immersing them in water or dropping them

Given are five observations for two variables, x and y. xi 1 2 3 4 5 yi 3 7 5 11 14 which of the following is a scatter diagrams accurately represents the data? what does the scatter diagram developed in part (a) indicate about the relationship between the two variables? try to approximate the relationship betwen x and y by drawing a straight line through the data. which of the following is a scatter diagrams accurately represents the data? develop the estimated regression equation by computing the values of b 0 and b 1 using equations (14.6) and (14.7) (to 1 decimal). = + x use the estimated regression equation to predict the value of y when x = 4 (to 1 decimal). =