Answer:
The probability is
Step-by-step explanation:
From the question we are told that
The mean is
The standard deviation is
The random number
Given that the time taken is normally distributed the probability is mathematically represented as
Generally the z-score for the normally distributed data set is mathematically represented as
So
This value is obtained from the z-table
2 is 37.
to find 1, subtract 37 from 90.
1 is 53.
3 is 143.
Answer:i think d.please dont blame me im not sure.sorry
Step-by-step explanation: