Answer:
40% apples
train going 80 miles per hour
1. 3 5/9
2. 1 11/28
3. 3/13
Given the CDF
we have PDF
Note that
is wait-time given in hours, so we need to convert from minutes to hours:
so we're looking for
.
The CDF gives us this value right away, since
for any continuous random variable
with distribution function
:
To use the PDF, we need to integrate:
Set it up as a proportion.
x/9 = 1/3
1/3 = 3/9
x/9 = 3/9
x = 3
You can eat 7 wings in a minute