Fifteen subgroups of five parts each are collected (five consecutive parts every hour for 15 hours). a critical to quality dimension is measured and the average and range are calculated for each of the fifteen subgroups. the grand average (average of the 15 averages) is calculated to be 18.37 mm and the average range (average of the 15 ranges) is calculated to be 0.113 mm. what is the lower control limit on the average chart?

6 hours 48 min

step-by-step explanation:

68÷5=13.6

13.6×30=408min=6 hours 48 min.

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saving = more money

step-by-step explanation:

if you have 100 bucks, and you want to buy a candy bar, even if you have one at home, if you choose not to buy it, you save.

~courtney

7.3

step-by-step explanation:

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c