Answer:
0.012
Step-by-step explanation:
The probability of more than 7 customers arriving within a minute is obtained by taking the probability at X equal to 0, 1, 2, 3, 4, 5, 6, and 7 then subtracting from the total probability. It can be expected about 1.2% of times that more than 7 customers arriving within a minute.
Answer: 0.0216
Step-by-step explanation:
Given : Average arrivals of customers at a local grocery store = 3 per minute
The Poisson distribution formula :-
[tex]\dfrac{e^{-\lambda}\lambda^x}{x!}[/tex], where [tex]\lambda[/tex] is the mean of the distribution.
If X = the number of arrivals per minute, then the probability of more than 7 customers arriving within a minute will be :-
[tex]\dfrac{e^{-3}(3)^7}{7!}=0.0216040314525\approx0.0216[/tex]
Hence, the probability of more than 7 customers arriving within a minute = 0.0216
