When set at the standard position, Autopitch can throw hard balls toward a batter at an average speed of 70 mph.

a, enter the centerline for the x chart for 99.7%confidence

b. enter the upper control limit for the x chart for 99.7%

c.enter the lower control limit for the x chart for 99.7%

d,enter the centerline for the R-chart for 99.7% confidence.

e, enter the upper control limit for the R-chart for 99.7% confidence. 

f enter the lower control limit for the R-chart for 99.7% confidence. (