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BlackZzzverrR [31]
3 years ago
13

I need help with this question

Mathematics
1 answer:
PSYCHO15rus [73]3 years ago
6 0

Answer:

3/28

Step-by-step explanation:

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lysha is at a local library with her best friend. they've noticed a lot of cute boys in the library, and alysha bets that of the
Annette [7]

Using the binomial distribution, there is a 0.1201 = 12.01% probability that Alysha will win the bet.

<h3>What is the binomial distribution formula?</h3>

The formula is:

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

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

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.

For this problem, the parameters are given as follows:

n = 20, p = 0.5.

She wins the bet if there are 12 boys, hence the probability is P(X = 12), found as follows:

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 12) = C_{20,12}.(0.5)^{12}.(0.5)^{8} = 0.1201

0.1201 = 12.01% probability that Alysha will win the bet.

More can be learned about the binomial distribution at brainly.com/question/24863377

#SPJ1

7 0
1 year ago
Simplify <br> ‐19 ‐ 7( ‐17z + 13)<br> 4n ‐ 3( ‐9n + 13)
nataly862011 [7]

Answer:

for the first one it's 119z−110

the second one is 31n−39

i'm not sure if you wanted both together

so here just incase

31n+119z−149

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
I want to kno what's is the answer to 5 divided by 2930
Mkey [24]
It would be:  5/2930 = 0.0017
3 0
3 years ago
BRAINLIEST!!!!
seraphim [82]
Its 12 miles because when you have a slope you do time and 4 time 3 equal 12 and you would do times to get how much the right triangle on a slope is
3 0
3 years ago
Read 2 more answers
LESSON 7 DEVELOP
Anarel [89]
Hundredths, i believe
8 0
3 years ago
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