There would be one donut left. 3-2=1
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:
She was supposed to add the hours(38.5) and multiply the amount of money she earned(7.50) resulting in $288.75
Correct me if I'm wrong and if it is I'm truly sorry