Which number is not in scientific notation?

1 answer:

7 0

All of them.

_____
The 4th selection is missing an exponent. (The exponent is improperly indicated in all the numbers.)

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Translate the verbal phrase into an algebraic expression. Simplify the expression.

adoni [48]

X(x+6)
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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

madreJ [45]

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