Hi, I need some help with this 4 part homework question. I can't seem to solve it. Can you give me a detailed response? Thank you

Use the above information to answer the following questions(always round to two decimal places):

I. Determine the lower and upper control limits for the x-bar control chart.The letter associated with the correct answer is

a) 4.81 and 5.23 respectively.

b) 4.65 and 5.39 respectively.

c) 4.91 and 5.13 respectively.

d) 4.94 and 5.10 respectively.

e)None of the above

II. Is the central process in control, explain why?The letter associated with the correct answer is

a) No, because exactly one x-bar values fall outside the control interval.

b) No, because exactly two x-bar values fall outside the control interval.

c) No, because exactly three x-bar values fall outside the control interval.

d) Yes, because all x-bar values fall within the control interval.

e)None of the above

III. Determine the lower and upper control limits for the R-control chart.The letter associated with the correct answer is

a) 0.00 and 0.32 respectively.

b) 0.00 and 0.34 respectively.

c) 0.02 and 0.28 respectively.

d) 0.02 and 0.30 respectively.

e)None of the above

IV. Is the variability of the process in control, explain why?The letter associated with the correct answer is

a) Yes, because all R values fall within the control interval.

b) No, because exactly one R value fall outside the control interval.

c) No, because exactly two R values fall outside the control interval.

d) No, because exactly three R values fall outside the control interval

e)None of the above

A chocolate company manufactures 4 ounces chocolate bars. Random samples of size four were taken and weighted. Eight hours of observation provided the following data: Sample Mean Range 1 4.95 0.12 2 5.02 0.17 3 4.98 0.15 4 5.15 0.15 5 4.89 0.12 6 5.04 0.17 7 8