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arlik [135]
3 years ago
14

4. Five marbles are randomly selected with replacement. The probability that a black marble is chosen is 15%.

Mathematics
1 answer:
STatiana [176]3 years ago
6 0
Answer: You have a 16.49% percent chance of having at least 2 black marbles.

This is an example of a binomial distribution. We have an event (drawing a black marble) that is only 15% likely. Out of 5 chances, we need to determine the likelihood that this occurs at least two time.

You can look up these values on a Binomial Distribution table.

We had to add up the percents for drawing 2, 3, 4, or 5 black marbles.

2 - 0.1382
3 - 0.0244 
4 - 0.0022
5 - 0.0001

Adding up these values gives us 0.1649.
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Answer:

30

Step-by-step explanation:

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2 years ago
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Likurg_2 [28]

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Step-by-step explanation:

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3 0
3 years ago
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Maslowich

Answer:

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8 0
2 years ago
Solve using the quadratic formula: 2x2-9x+12=0
marta [7]

Answer:

no solution

Step-by-step explanation:

For getting the nature of solution of the quadratic equation of the form:

ax² + bx + c = 0

We need to find Discriminant which is:

Discriminant (D) = b² - 4ac

  • If D < 0, there is no solution of equation.
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  • If D < 0, there are two real and distinct solution of equation

Here we have equation is:

2x² - 9x + 12 = 0

∴ a=2, b = -9, c = 12

⇒ D = 81 - 4 × 2 × 12 = -16 < 0

Hence, there is no solution of given equation.

5 0
3 years ago
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2 years ago
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