I need help with this, I know the total would equal 100% but I don’t know what to do...

Mathematics

1 answer:

Sauron [17]3 years ago

7 0

Answer:

320

Step-by-step explanation:

1. Divide the 20 by % (20 / 5)

2. Take that number (People per percent) and multiply x 80.

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Simplify -2^3. O 8 O 6 O -6 O -8

Marat540 [252]

Answer:

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Step-by-step explanation:

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6 0

3 years ago

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A parking lot contains 100 cars , k of which happen to be lemons. we select m of these cars

Sunny_sXe [5.5K]

Given that a parking lot contains 100 cars, k of which happen to be lemons.

This is a conditional probability question.

Let event A be that a car is tested and event B be that a car is lemon.

The probability that a car is lemon is given by $\frac{k}{100}$

The probability that a car is tested is given by $\frac{m}{100}$

The probability that a car is lemon and it is tested is given by $\frac{n}{m}$

For a conditional probability, the probablility of event A given event B is given by:

$P(A|B)= \frac{P(A\cap B)}{P(B)}$

Therefore, the probability that a car is lemon, given that it is tested is given by.

$P(lemon|tested)= \frac{P(lemon\, and\, tested)}{P(tested)} \\ \\ = \frac{ \frac{n}{m} }{ \frac{m}{100} } = \frac{n}{m} \times \frac{100}{m} = \frac{100n}{m^2}$