Question: More computer chips: Using the data in Exercise 3: a. Find the sample variance of the thicknesses for each process. b. Find the sample standard

More computer chips: Using the data in Exercise 3:
a. Find the sample variance of the thicknesses for each process.
b. Find the sample standard deviation of the thicknesses for each process.
c. Which process appears to be better in producing a uniform thickness? Explain.

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