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1 answer:
Answer:
Step-by-step explanation:
It's all about algebraically manipulating the equation. We want to get D by itself, so how do we do that? Well, D is being multiplied by v and divided by 114, so we just need to do the opposite to both sides of the equation.
You just multiply both sides by 114 and then divide both sides by v. You could do it in either order since there is no addition or subtraction, if there was you would have to take that into consideration.
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Answer:
The probability that when 11 adults are randomly selected, 3 or fewer are in excellent health is 0.6483.
Step-by-step explanation:
The random variable <em>X</em> can be defined as the number of adults questioned reported that their health was excellent.
A random sample of <em>n</em> = 11 adults are selected randomly selected from an area a nuclear power plant.
Of these 11 adults <em>X</em> = 3 reported that their health was excellent.
The proportion of adults who reported that their health was excellent is:
An adult's health condition is not affected by others, i.e. they are independent.
The random variable <em>X</em> follows a Binomial distribution with parameters <em>n</em> = 11 and <em>p</em> = .
The probability mass function of <em>X</em> is:
Compute the probability that when 11 adults are randomly selected, 3 or fewer are in excellent health as follows:
P (X ≤ 3) = P (X = 0) + P (X = 1) + P (X = 2) + P (X = 3)
Thus, the probability that when 11 adults are randomly selected, 3 or fewer are in excellent health is 0.6483.