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Morgarella [4.7K]
3 years ago
12

Barb has 3 1/4 ft of ribbon left over. She used 2 1/4 ft to wrap a gosh and 3/4 ft to decorate a picture frame. She then used 1

3/4 ft for hair ribbons. How many feet of ribbon sis Barb start with?
Mathematics
1 answer:
saveliy_v [14]3 years ago
7 0
3+1/4+2+1/4+3/4+1+3/4= 8ft. Therefore Barb started with 8ft of ribbon
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Using the binomial distribution, it is found that:

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

It is the probability of exactly <u>x successes on n repeated trials, with p probability </u>of a success on each trial.

The expected value of the binomial distribution is:

E(X) = np

The standard deviation of the binomial distribution is:

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For this problem, the parameters are given as follows:

n = 8, p = 0.09.

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There are 2 green marbles, 4 blue marbles, 1 red marble, and 8 yellow marbles in a bag. Once a marble is drawn, it is NOT replac
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Answer:

P(a blue marble then a green marble) is 4/105 ⇒ 1st answer

Step-by-step explanation:

* Lets explain how to solve the problem

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- There are 1 red marble

- There are 8 yellow marbles

- Once a marble is drawn, it is <em>NOT</em> replaced

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* At first lets find the total number of marbles by adding all color

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∴ The total number of marbles = 2 + 4 + 1 + 8 = 15

∴ There are  15 marbles in the bag

∵ Probability = number of events/number of all outcomes

∵ There are 4 blue marbles

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