Arrivals at a fast-food restaurant follow a Poisson distribution with a mean arrival rate of 16 customers per hour. In the study of statistics and probability, the Poisson distribution is a widely-used discrete probability distribution. Using the formula, it was determined that 0.0661 is the probability that in the next hour there will be exactly 12 arrivals.
Adam is incorrect because if you substitute the value of y (which is 2) on the expression 52-3y=20, the statement is false since 46 is obviously not equal to 20.