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SCORPION-xisa [38]

4 years ago

14

A bag contains 3 blue and 2 green marbles. What is the probability of drawing a blue marble folowed by a green marble, without r

eplacing the first marble?

1 answer:

nadya68 [22]4 years ago

8 0

3 out of 5 percent chance

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A real estate agent has 12 properties that she shows. She feels that there is a 30% chance of selling any one property during a

Ronch [10]

Answer:

0.2528 = 25.28% probability of selling no more than 2 properties in one week.

Step-by-step explanation:

For each property, there are only two possible outcomes. Either they are sold, or they are not. The chance of selling any one property is independent of selling another property, which means that the binomial probability distribution is used to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

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

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

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

And p is the probability of X happening.

A real estate agent has 12 properties that she shows.

This means that $n = 12$

She feels that there is a 30% chance of selling any one property during a week.

This means that $p = 0.3$

Compute the probability of selling no more than 2 properties in one week.

2 or less sold, which is:

$P(X \leq 2) = P(X = 0) + P(X = 1) + P(X = 2)$

In which

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

$P(X = 0) = C_{12,0}.(0.3)^{0}.(0.7)^{12} = 0.0138$

$P(X = 1) = C_{12,1}.(0.3)^{1}.(0.7)^{11} = 0.0712$

$P(X = 2) = C_{12,2}.(0.3)^{2}.(0.7)^{10} = 0.1678$

Then

$P(X \leq 2) = P(X = 0) + P(X = 1) + P(X = 2) = 0.0138 + 0.0712 + 0.1678 = 0.2528$

0.2528 = 25.28% probability of selling no more than 2 properties in one week.

8 0

3 years ago

1/2 dived by what equlels 4

kati45 [8]

Answer:

1/8

Step-by-step explanation:

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3 years ago

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What is the standard form for a quadratic?

Zigmanuir [339]

Standard Form : f (x) = a(x - h)2 + k

Where in this equation (H,K) is the vortex of the parabola

<u>and there are four other ways to solving these quadratic</u>

1. Factoring

2. Completing the square

3. Your quadratic formula ( f (x) = a(x - h)2 + k )

4. Graphing

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3 years ago

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Stock in Globin Publishing costs $8.72 per share. Mary buys 105 shares of Globin Publishing, and her broker charges a commission

matrenka [14]

105 × $8.72 = $915.60
$915.60 + $348 = $1,263.60

Mary paid $1,263.60 for the stock.

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3 years ago

If you flip a coin and roll a 6-sided die, what is the probability that you will flip a heads and roll a 1

Novosadov [1.4K]

P(H)=1/2, P(1)=1/6

P(H and 1)=(1/2)(1/6)=1/12 (≈8.33%)

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3 years ago

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