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2 years ago

Gordon rolls a fair dice 216 times. How many times would Gordon expect to roll a four?

Mathematics

1 answer:

Nana76 [90]2 years ago

8 0

Answer:

Step-by-step explanation:

1/6(216/1)

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A man dives to a depth of 105 metres below sea level. A submarine is stationed at a depth which is 60 times the depth of the div

maw [93]

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Step-by-step explanation:

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2 years ago

gabby plans to hike 6.3 kilometers to see a waterfall.she stops to rest after hiking 4.75 kilometers.how far does she have left

N76 [4]

1.55 is your answer :)

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3 years ago

Read 2 more answers

Which expression is the result of subtracting (Z2-3i) from (Z1 + 2)? A B C D

Reika [66]

Answer:

im not sure but ill try i think A

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2 years ago

Read 2 more answers

Y'all i need help immediately

adoni [48]

Answer:

Option B

Step-by-step explanation:

Don't trust answers teachers don't bother to spell correctly. Plus, finding the 100th term is very easy.

However, the explicit formula will take a long time to use, because it's explicit.

Option C is just wrong. You're supposed to multiply in the recursive formula.

Option D might be correct, but never trust those answers. Teachers do that to trip you up

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3 years ago

Not all visitors to a certain company's website are customers. In fact, the website administrator estimates that about 5% of all

Gnom [1K]

Answer:

0.0135 = 1.35% probability that, in a random sample of 4 visitors to the website, exactly 2 actually are looking for the website.

Step-by-step explanation:

For each visitor of the website, there are only two possible outcomes. Either they are looking for the website, or they are not. The probability of a customer being looking for the website is independent of other customers. This 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.

5% of all visitors to the website are looking for other websites.

So 100 - 5 = 95% are looking for the website, which means that $p = 0.95$

Find the probability that, in a random sample of 4 visitors to the website, exactly 2 actually are looking for the website.

This is P(X = 2) when n = 4. So

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

$P(X = x) = C_{4,2}.(0.95)^{2}.(0.05)^{2} = 0.0135$

0.0135 = 1.35% probability that, in a random sample of 4 visitors to the website, exactly 2 actually are looking for the website.

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2 years ago