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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 :
Answer:
Equivalent expression is
Step-by-step explanation:
Given expression is,
First step is to apply distributive property. The property states that,
Applying the property,
Simplifying,
Collecting like terms,
Combining the like terms,
Therefore, equivalent expression is