The mean number of daily surgeries at a local hospital is 6.2. assume that surgeries are random, independent events.

(a) the count of daily surgeries follows approximately:

a poisson distribution with mean 6.2 and standard deviation 2.49.

a binomial distribution with mean 6.2 and standard deviation 3.8.

a binomial distribution with mean 6.2 and standard deviation 1.76.

a poisson distribution with mean 6.2 and standard deviation 6.2.

a binomial distribution with mean 6.2 and standard deviation 3.1.

The count of daily surgeries follows approximately a Poisson distribution with mean 6.2 and standard deviation 2.49.

Step-by-step explanation:

The Poisson distribution is a discrete probability distribution that expresses the probability of a certain number of events occurring during a certain period of time.

In this exercise the period of time is daily.

The mean of the distribution is λ=6.2.

The standard deviation of the distribution is √λ=√6.2=2.49

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.

10/60

step-by-step explanation:

if you divide 10 by 60 the answer is 0.166666 while if you divide or solve the other problems it equals 0.6