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n200080 [17]
3 years ago
5

How to write 25 percent of N

Mathematics
2 answers:
Eva8 [605]3 years ago
8 0
25÷100=0.25 0.25×n=the percentage Or 0.25n Or 0.25•n
OverLord2011 [107]3 years ago
8 0
It is simple all you have do is do 25/100 N
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kirill115 [55]
The function for x=3 is 1
5 0
3 years ago
4. In a sample of 1000 people, 130 can wiggle their ears. Two unrelated people are
Elina [12.6K]

Using the hypergeometric distribution, it is found that there is a 0.7568 = 75.68% probability that neither can wiggle his or her ears.

The people are chosen from the sample without replacement, which is why the <u>hypergeometric distribution</u> is used to solve this question.

Hypergeometric distribution:

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

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

The parameters are:

  • x is the number of successes.
  • N is the size of the population.
  • n is the size of the sample.
  • k is the total number of desired outcomes.

In this problem:

  • 1000 people means that N = 1000
  • 130 can wiggle their ears, thus k = 130
  • Two are selected, thus n = 2.

The probability that neither can wiggle his or her ears is P(X = 0), thus:

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

P(X = x) = h(0,1000,2,130) = \frac{C_{130,0}C_{870,2}}{C_{1000,2}} = 0.7568

0.7568 = 75.68% probability that neither can wiggle his or her ears.

A similar problem is given at brainly.com/question/24826394

5 0
2 years ago
Which is more? 15 inches or 1 foot
zubka84 [21]
1 ft = 12 inches

therefore, 15 inches is more then 1 ft
4 0
3 years ago
Read 2 more answers
2) (1, -5), (7,-3)<br> (1,-5),(7-3)
nordsb [41]

Answer:

what do you want to know?

Step-by-step explanation:

7 0
3 years ago
21 22 23 24 25 The function f(x) is shown on the graph. What is f(0)? 0 only –6 only –2, 1, 1, and 3 only –6, –2, 1, 1, and 3 on
sertanlavr [38]
Help me please i posted it
3 0
3 years ago
Read 2 more answers
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