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Ostrovityanka [42]
3 years ago
12

A bag contains 77 apples and 55 oranges. if you select 66 pieces of fruit without​ looking, how many ways can you get 66 ​apples

?
Mathematics
1 answer:
yuradex [85]3 years ago
6 0
77C55*55 = (77! X 66!/ 2) = 139,755

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In a randomly selected sample of 100 students at a University, 81 of them had access to a computer at home. Give the value of th
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Answer:

The value of the standard error for the point estimate is of 0.0392.

Step-by-step explanation:

Central Limit Theorem

The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean \mu = p and standard deviation s = \sqrt{\frac{p(1-p)}{n}}

In a randomly selected sample of 100 students at a University, 81 of them had access to a computer at home.

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The value of the standard error for the point estimate is of 0.0392.

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