PLZ HELP 20 POINTS!!!!!!!! WILL PUT BRAINLIEST!!!!!!!!!!!
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Answer:
The probability that at most three used the emergency room for a sample of 10 people is 0.8791.
Step-by-step explanation:
The random variable <em>X</em> can be defined as the number of people in a community using the emergency room.
The probability that a person uses the emergency room is, <em>p</em> = 0.20.
A sample of <em>n</em> = 10 people are selected.
A person using the emergency room is independent of others.
The random variable <em>X</em> thus follows a Binomial distribution with parameters <em>n </em>= 10 and <em>p</em> = 0.20.
The probability mass function of <em>X</em> is provided as follows:
Compute the probability that at most three used the emergency room as follows:
P (X ≤ 3) = P (X = 0) + P (X = 1) + P (X = 2) + P (X = 3)
Thus, the probability that at most three used the emergency room for a sample of 10 people is 0.8791.
Answer:
<em>The value of b is</em><em> 8</em><em>.</em>
Step-by-step explanation:
The given function is,
The given data is,
i.e when the value of x is -2, then the value of the function is -14.
Putting all the values,
Therefore, the value of b is 8.