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WARRIOR [948]
3 years ago
9

Open this pic and I'll give brainliest answer ​

Mathematics
1 answer:
Oksanka [162]3 years ago
7 0

Answer:

wait im confused open the picture or answer it?

Step-by-step explanation:

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FOIL (first outside inside last)

x^2-5x+5x-25 = x^2-25
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2 years ago
slader Suppose that 8% of all bicycle racers use steroids, that a bicyclist who uses steroids tests positive for steroids 96% of
d1i1m1o1n [39]

Answer:

P = 0.4812

Step-by-step explanation:

First, we need to use here two expressions and then do the calculations.

The first one is the conditional probability which is:

P(B|A) = P(A∩B)/P(A)   (1)

The second expression to use has relation with the Bayes's theorem which is the following:

P(D|C) = P(C|D)*P(D) / P(C|D)*P(D) + P(C|d)*P(d)   (2)

Now, the expression (2) is the one that we will use to calculate the probability of a selected random bicyclist who tests positive for steroids.

So, in this case, we will call C for positive and D that is using steroids and d is the opposite of d, which means do not use steroids.

Then, the probabilities are the following:

P(D) = 8% or 0.08

P(C|D) = 96% or 0.96

P(C|d) = 9% or 0.09

P(d) = 1 - 0.08 = 0.92

With these data, let's replace in expression 2

P(D|C) = 0.96 * 0.08 /0.96 * 0.08 + 0.09*0.92

P(D|C) = 0.0768 / 0.1596

P(D|C) = 0.4812 or 48.12%

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3 years ago
A factory produces fuses, which are packaged in boxes of 22. Four fuses are selected at random from each box for inspection. The
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The probability of finding one of the two defective fuses is:
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Therefore the probability of rejecting is 0.3117 + 0.026 = 0.3377.
5 0
3 years ago
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