Source: Revised GRE PDF 2nd Ed. Section 6; #22 (p. 92)

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The figure shows the standard normal distribution

The figure shows the standard normal distribution, with mean 0 and standard deviation 1, including approximate percents of the distribution corresponding to the six regions shown. Ian rode the bus to work last year. His travel times to work were approximately normally distributed, with a mean of 35 minutes and a standard deviation of 5 minutes. According to the figure shown, approximately what percent of Ian’s travel times to work last year were less than 40 minutes? 14%, 34%, 60%, 68%, 84%

1 Explanation

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Gravatar Chris Lele, Magoosh Tutor

Sep 27, 2012 • Comment

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