Can we say the process is under control by observing one subgroup out of control limit?

i will 10 upvotes plz do fast A liquid of specific gravity 0.88 and absolute viscosity 6.533 x 10^-4 Ns/m is flowing through a pipe of diameter 0.15 m at the rate of 60 litres per second. If the loss of head in 100 m length of pipe is 4.56 m. Determine whether the pipe is rough or smooth.

You are the newly appointed assistant administrator at a local hospital, and your first project is to investigate the quality of the patient meals put out by the food-service department. You conducted a 10-day survey by submitting a simple questionnaire to the 400 patients with each meal, asking that they simply check off that the meal was either satisfactory or unsatisfactory. For simplicity in this problem, assume that the response was 1,000 returned questionnaires from the 1,200 meals each day. The results are as follows. December 1 December 2 December 3 December 4 December 5 December 6 December 7 December 8 December 9 December 10 NUMBER OF UNSATISFACTORY MEALS 77 74 62 70 82 50 50 42 54 58 619 SAMPLE SIZE 1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000 10,000