Answer: 121
Explanation: As stated in the problem use the equation: A=s^2, where s is the side lengths of the square. The problem tells us the side length is 11.
So the equation is: A= 11^2
Solve: A=121
The reason why you only need one side length for a square is because all side lengths are equal.
Answer:
56.65% probability that more than 3 customers arrive during 15 minutes
Step-by-step explanation:
In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:
In which
x is the number of sucesses
e = 2.71828 is the Euler number
is the mean in the given interval, which is the same as the variance. The standard deviation is the square root of the variance.
Standard deviation of 2 customers per 15-minutes.
So
What is the probability that more than 3 customers arrive during 15 minutes
Either three or less customers arrive, or more than 3 do. The sum of these probabilities is decimal 1. Mathematically, we have that:
We want P(X > 3). So
In which
56.65% probability that more than 3 customers arrive during 15 minutes
Answer:
to find the mean you must add all of the numbers in a data set together and then divide by how many numbers there are.