题目内容
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65 Two sources of variation in the length of hex bolts exist. Production variation and measurement error. The QC manager knows that the standard deviation from these sources is 0.24" and 0.43" , respectively. What is the total standard deviation.
A. .10 inch.
B. .19 inch.
C. .34 inch.
D. .49 inch.
E. .67 inch.
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183 Two sources of variation in the length of hex bolts exist. Production variation and measurement error. The QC manager knows that the standard deviation from these sources is 0.24" and 0.43" , respectively. What is the total standard deviation.
A. .10 inch.
B. .19 inch.
C. .34 inch.
D. .49 inch.
E. .67 inch
A.most of them
B.most of which
C.most of whom
D.most of what
