Question

The miles per gallon (mpg) for each of 20 medium-sized cars selected from a production line during the month of March are listed below. 23.0 21.2 23.5 23.6 20.1 24.3 25.2 26.9 24.6 22.6 26.1 23.1 25.8 24.6 24.3 24.1 24.8 22.1 22.8 24.5 (a) Find the z-scores for the largest measurement. (Round your answers to two decimal places.) z =

214

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Esmeralda

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89 Answers

the mean is \bar{x}=23.86
the standard deviation is s=1.6414
the largest measurement is x=26.9 the z-score is z=\frac{x-\bar{x}}{s}=\frac{26.9-23.86}{1.6414}=1.85

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