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Statement of a problem № m343

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Dave’s Automatic Door installs automatic garage door openers. The following list indicates the number of minutes needed to install 10 door openers: 28, 32, 24, 46, 44, 40, 54, 38, 32, and 42. (a) Range, (b) Arithmetic mean, (c) Variance, and (d) Interpret the statistics.




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