How many American adults must be interviewed to estimate the proportion of all American adults who actively try to avoid drinkin
1 answer:
You might be interested in
Answer:
P(0) = 0.055
P(1) = 0.16
P(2) = 0.231
P(3) = 0.224
P(4) = 0.162
P(5 or more) = 0.168
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.
Here λ = 2.90 is the average number of bacteria colonies per field.
This means that
Compute P(r) for r = 0, 1, 2, 3, 4, and 5 or more.
5 or more:
This is
In which:
So
P(5 or more) = 0.168