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03.12.2021 •
Mathematics
It is essential in the manufacture of machinery to utilize parts that conform to specifications. In the past, diameters of ball-bearings produced by a certain manufacturer had a variance of 0.00156. To cut costs, the manufacturer instituted a less expensive production method. The variance of the diameters of 100 randomly sampled ball bearings produced by the new process was 0.00211. Do the data provide sufficient evidence to indicate that diameters of ball-bearings produced by the new process are more variable than those produced by the old process?
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Ответ:
a - value of the first term
n - value of the nth term
d - common difference
This is how you match these functions with their definitions, but you've already got it correct.