Answer:
72 of 45 is 160%
Step-by-step explanation:
72 of 45 can be written as:

To find percentage, we need to find an equivalent fraction with denominator 100. Multiply both numerator & denominator by 100


Therefore, the answer is 160%
If you are using a calculator, simply enter 72÷45×100 which will give you 160 as the answer.
Answer:
40.25 if my math is right
Step-by-step explanation:
Answer: The mean number of checks written per day 
Standard deviation
Variance 
Step-by-step explanation:
Given : The total number of checks wrote by person in a year = 126
Assume that the year is not a leap year.
Then 1 year = 365 days
Let the random variable x represent the number of checks he wrote in one day.
Then , the mean number of checks wrote by person each days id=s given by :-

Since , the distribution is Poisson distribution , then the variance must equal to the mean value i.e. 
Standard deviation : 