A physical fitness association is including the mile run in its secondary school fitness test. The time for this event for boys in secondary school is known to possess a normal distribution with a mean of 450 seconds and a standard deviation of 40 seconds. Between what times do we expect most (approximately the middle 95%) of the boys to run the mile? Round answer to the nearest tenths. We expect most boys to run the mile between seconds and seconds.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
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A physical fitness association is including the
mile run in its secondary school fitness test.
The time for this event for boys in secondary
school is known to possess a normal
distribution with a mean of 450 seconds and
a
standard deviation of 40 seconds. Between
what times do we expect most
(approximately the middle 95%) of the boys
to run the mile? Round answer to the nearest
tenths.
We expect most boys to run the mile
between
seconds and
seconds.
Transcribed Image Text:A physical fitness association is including the mile run in its secondary school fitness test. The time for this event for boys in secondary school is known to possess a normal distribution with a mean of 450 seconds and a standard deviation of 40 seconds. Between what times do we expect most (approximately the middle 95%) of the boys to run the mile? Round answer to the nearest tenths. We expect most boys to run the mile between seconds and seconds.
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