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2 years ago

7

Eeeeeeeeeeeeeeeeeeeeeeeeee

2 answers:

Blizzard [7]2 years ago

8 0

Answer:

well said

Step-by-step explanation:

nice

Airida [17]2 years ago

7 0

Answer:

I agree

Step-by-step explanation:

Yes

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Ruben bought 6 new books for his collection. This increased his collection by 12%. How many books did he have before his purchas

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He had 50 books before.

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3 years ago

A ray that contains a point that is equidistant from both sides of the angle. *

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3 years ago

What is the solution to the equation below. square root x - 4 = -2

ArbitrLikvidat [17]

Answer:

The answer is b.

Step-by-step explanation:

x-4=-2

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x= 2

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2 years ago

Read 2 more answers

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Step-by-step explanation:

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3 years ago

Your neighbor has a bag with 5 oranges and 7 apples in it. You will be receiving two pieces of fruit from your neighbor. What is

Snezhnost [94]

Answer:

31.82% probability that you will receive 2 apples.

Step-by-step explanation:

The fruits are removed from the bag, which means that the hypergeometric distribution is used to solve this question.

Hypergeometric distribution:

The probability of x sucesses is given by the following formula:

$P(X = x) = h(x,N,n,k) = \frac{C_{k,x}*C_{N-k,n-x}}{C_{N,n}}$

In which:

x is the number of sucesses.

N is the size of the population.

n is the size of the sample.

k is the total number of desired outcomes.

Combinations formula:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

In this question:

5 + 7 = 12 total fruits, which means that $N = 12$

7 apples, which means that $k = 7$

You receive 2 fruits, which means that $n = 2$

What is the probability, in percent, that you will receive 2 apples, assuming she removes them from the bag in random order?

This is, as a proportion, P(X = 2). So

$P(X = x) = h(x,N,n,k) = \frac{C_{k,x}*C_{N-k,n-x}}{C_{N,n}}$

$P(X = 2) = h(2,12,2,7) = \frac{C_{7,2}*C_{5,0}}{C_{12,2}} = 0.3182$

0.3182*100% = 31.82%

31.82% probability that you will receive 2 apples.

4 0

3 years ago