Discounts: there are 125,000 American soldiers in Iraq . 25% are infantry. From the rest 40% are reservist. How many reservist a
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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.
Answer:
Volume = 1114.1
Step-by-step explanation:
Recall that the formula for the volume of a pyramid is given by:
where B is the area of the pyramid's base (in our case a square of side 12,8 in), and H the pyramid's height (in our case 20.4 in).
Then the square base of the pyramid has an area given by:
Finally,we can now write the volume of the pyramid as:
Rounding the answer to a tenth of a cubic inch, we get:
Volume = 1114.1