Using the binomial distribution, there is a 0.2094 = 20.94% probability that exactly 5 of them stayed on their job for less than one-year.
<h3>What is the binomial distribution formula?</h3>
The formula is:
The parameters are:
- x is the number of successes.
- n is the number of trials.
- p is the probability of a success on a single trial.
In this problem, there is a fixed number of independent trials, each with only two possible outcomes, hence the <em>binomial distribution </em>is used. The values of the parameters are:
n = 15, p = 0.36.
The probability is P(X = 5), hence:
0.2094 = 20.94% probability that exactly 5 of them stayed on their job for less than one-year.
More can be learned about the binomial distribution at brainly.com/question/24863377
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7)
8/14 = x/7
14x = 56
x = 56/14
x = 4
answer
GH = 4
8)
24/56 = 36/x
24x = 2016
x = 2016/24
x = 84
answer
PR = 84
Answer:
C) The expected value is -$40, so the man should not buy the warranty.
Step-by-step explanation:
The total cost to the man is expected to be the total of the amount he pays for the warranty and any amounts he gets because he has the warranty ...
-$100 +600×0.10 +0×0.90 = -$40
The expected value of the warranty is -$40. Based on that alone, the man should decide not to buy it.
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<em>Comment on warranties</em>
The expected value of a warranty to the buyer is <em>always negative</em>. That is how warranty companies make their money. Clearly, <em>expected value</em> is not the only criterion that should be considered.