X/2+x/3=3/4 Solve for x

Mathematics

1 answer:

hodyreva [135]3 years ago

6 0

Answer:

x= 9/10

Step-by-step explanation:

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A carnival booth has a participant pick one of five boxes to reveal a the prize inside. One box contains $100 and the other box

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The sum of the number is 103.the second number is 4 times the third.the third number is 5 more then the first .what are the numb

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Answer:

13, 18, 72

Step-by-step explanation:

let x-5 represent the first number, since the first number is 5 less than the third number. let x represent the third number. let 4x represent the third number, since it's four times greater than the third number.

set up an equation, and make it equal to 103:

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solve:

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Suppose the true proportion of high school juniors who skateboard is 0.18. If many random samples of 250 high school juniors are

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Answer:

0.024

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 $s = \sqrt{\frac{p(1-p)}{n}}$