Problem 5.

NOTE:

An oven has a target of

90 +

Only four samples could be taken with measurements of:

89,

92,

89, and

degrees. Find the following:

2 degrees.

RR:

91

Cp:

Cpk

HINT: Use the Moving Range Method

USE EXTENDED SHEWHART COEFFICIENTS CHART FOR n >20

USE CORRECT CASE (UPPER/LOWER) WHEN YOU LOOK UP THE

COEFFICIENT!!!

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