Answer:
0.994 = 99.4% probability that a 10-cubic-foot block of the wood has at most 5 knots.
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.
1.6 knots in 10 cubic feet of the wood.
This means that
Find the probability that a 10-cubic-foot block of the wood has at most 5 knots.
In which
0.994 = 99.4% probability that a 10-cubic-foot block of the wood has at most 5 knots.
