Use the REGRESSION feature on a graphing calculator.
-For some reason the quality of production decreased as the year progressed at a flash drive manufacturing plant.The following data represent the percentage of defective flash drives produced at the plant in the corresponding month of the year. Use the regression equation with values rounded to four decimals to predict the percentage of defective drives in month
6,June.
A)2.0%
B)2.20%
C)2.3%
D)2.15%

Question

Use the REGRESSION feature on a graphing calculator.
-For some reason the quality of production decreased as the year progressed at a flash drive manufacturing plant.The following data represent the percentage of defective flash drives produced at the plant in the corresponding month of the year.  Use the regression equation with values rounded to four decimals to predict the percentage of defective drives in month
6,June.
A)2.0% 
B)2.20% 
C)2.3% 
D)2.15%

Quizplus · Accepted Answer

Using the regression feature on a graphing calculator, the equation for the line of best fit is y = 0.0254x + 2.0246, where x represents the month and y represents the percentage of defective drives. Plugging in x = 6, we get y = 2.15%. Therefore, the best choice is D.

Use the REGRESSION Feature on a Graphing Calculator