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Find the probability that the friend is at least 21 minutes late. A probability density function has a horizontal axis labeled X and Time (minutes)

Find the probability that the friend is at least 21 minutes late.

A probability density function has a horizontal axis labeled "X" and "Time (minutes)" from 0 to 35 in intervals of 5 and a vertical axis labeled "Density" from 0 to StartFraction 1 over 30 EndFraction plus. The probability density function is a rectangle from 0 to 30 with a height of StartFraction 1 over 30 EndFraction.
The probability that the friend is at least 21 minutes late is
nothing

Round to 3 decimal places as needed.
1/30- Density 10 20 30 X Time (min) OK

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