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3 years ago

9

For women at hartford college, times to run 400 meters are normally distributed with a mean of 84 seconds and a standard deviati

on of 7 seconds. what percentage of the times are more than 91 seconds? more than 63 seconds?

1 answer:

pashok25 [27]3 years ago

4 0

z=(63-84)/3= -21/7= -3
P(x>63)=p(z > -3) = .9987 or 99.87%

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<h3>How to complete the blanks?</h3>

The equation is given as:

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