Algebra 2

Times for an ambulance to respond to a medical emergency in a certain town are normally distributed with a mean of 450 seconds and a standard deviation of 50 seconds.

Suppose there are 160 emergencies in that town.

In about how many emergencies are the response times expected between 400 seconds and 500 seconds?


55 <my choice



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  2. how do I use that ?

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  3. use first choice, area from values

    mean 450
    sd 50

    between 400 and 500

    output is .6827 or 68% are between
    well that is a little less thsan .7*160 = 112

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