a. The correlation matrix below represents the relationship in the investment returns among three financial investment portfolios (A, B, and C). i. Describe the relationship among the three investment portfolios. [4 MARKS] ii. Suppose an investor intends to diversify his/her investment for optimum stability. In which two portfolios can he/she invest to achieve this objective? Why? [3 MARKS] b. Statistical Quality Control i. A machine drills hole in a pipe with a mean diameter of 0.532cm and a standard deviation of 0.002cm. Calculate the control limits for mean of samples 5 [3 MARKS] ii. The following data gives the readings for 8 samples of size 6 each in the production of a certain product. Find the control limits using mean chart. [5 MARKS] Given for n=6,A2=0.483, a. The correlation matrix below represents the relationship in the investment returns among three financial investment portfolios (A, B, and C). i. Describe the relationship among the three investment portfolios. [4 MARKS] ii. Suppose an investor intends to diversify his/her investment for optimum stability. In which two portfolios can he/she invest to achieve this objective? Why? [3 MARKS] b. Statistical Quality Control i. A machine drills hole in a pipe with a mean diameter of 0.532cm and a standard deviation of 0.002cm. Calculate the control limits for mean of samples 5 [3 MARKS] ii. The following data gives the readings for 8 samples of size 6 each in the production of a certain product. Find the control limits using mean chart. [5 MARKS] Given for n=6,A2=0.483