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rosijanka [135]
3 years ago
6

What is the sum of x?

Mathematics
2 answers:
nignag [31]3 years ago
7 0
The answer: sum of x is 40.
Korolek [52]3 years ago
3 0

Answer:

the answer is 40

Step-by-step explanation:

x+60

x=60-20

x=20

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6 high school seniors choose from among 20 quotes for their yearbook. What is the probability that at least 2 of them choose the
shusha [124]

Using the binomial distribution, it is found that there is a 0.0328 = 3.28% probability that at least 2 of them choose the same quote.

<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.

In this problem, we have that:

  • There are 6 students, hence n = 6.
  • There are 20 quotes, hence the probability of each being chosen is p = 1/20 = 0.05.

The probability of one quote being chosen at least two times is given by:

P(X \geq 2) = 1 - P(X < 2)

In which:

P(X < 2) = P(X = 0) + P(X = 1).

Then:

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

P(X = 0) = C_{6,0}.(0.05)^{0}.(0.95)^{6} = 0.7351

P(X = 1) = C_{6,1}.(0.05)^{1}.(0.95)^{5} = 0.2321

Then:

P(X < 2) = P(X = 0) + P(X = 1) = 0.7351 + 0.2321 = 0.9672.

P(X \geq 2) = 1 - P(X < 2) = 1 - 0.9672 = 0.0328

0.0328 = 3.28% probability that at least 2 of them choose the same quote.

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

6 0
2 years ago
Find the volume of the solid below.
9966 [12]

Answer:

3000 cm^3.

Step-by-step explanation:

If the top number is 15 it's

15 * 20 * 10

=  3000 cm^3.

7 0
3 years ago
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Determine the correct scientific notation form of the number. 627,000,000
GREYUIT [131]

Answer:

6.27 x 10 ^ 8

Step-by-step explanation:

8 0
3 years ago
Can you solve this and don't respond that you don't know <br><br><br><br><br><br><br><br><br><br>​
Fofino [41]

The answer is going to be

B)

1/8 Lb.

6 0
3 years ago
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Help please please please
den301095 [7]

there is 120 ways to get the word banana

4 0
3 years ago
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