Answer:
Step-by-step explanation:
?
Answer:
105?
Step-by-step explanation:
<span>Volume = L * W * H cubic units
Surface Area = 2 * (LW + LH + WH) square units</span>
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 : 