An engineer was asked to determine whether the average air quality in a vehicle assembly plant was
Question:
An engineer was asked to determine whether the average air quality in a vehicle assembly plant was within OSHA guidelines. The following air quality readings were collected:
81, 86, 80, 91, 83, 83, 96, 85, 89
(a) Determine the sample mean.
(b) Calculate the standard deviation.
(c) Determine the number of values and percent of values that fall within 1 standard deviation of the mean.
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a X 81 86 80 91 83 83 96 85 899 86 b c Range for 1s i...View the full answer
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