Answer:
Area = 64
Step-by-step explanation:
area of a square = 
side length = 8
= 64
SOLUTION
The mean is 4min
standard deviation is 1min
the z score is

where

then we have

The probability the call lasted less than 3 min will be
Therefore, the probability that (z < -1 ) is
[tex]\begin{gathered} Pr(z<-1)=Pr(0
Hence, the percentage of the calls that lasted less than 3 min is 16%
Answer:
A. Area under a curve
Step-by-step explanation:
Edge 2021