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galina1969 [7]
3 years ago
6

What is equivalent to the square root of 8?

Mathematics
1 answer:
Pavlova-9 [17]3 years ago
5 0
It would be 2 root 2
bc it simplifies to root 2 and root 4 
root 4 simplifies to 2 
so its 2√2
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If IQ scores are normally distributed with a mean of 100 and a standard deviation of 5, what is the probability that a person se
notsponge [240]

Answer:

2.28% probability that a person selected at random will have an IQ of 110 or higher

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

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In this problem, we have that:

\mu = 100, \sigma = 5

What is the probability that a person selected at random will have an IQ of 110 or higher?

This is 1 subtracted by the pvalue of Z when X = 110. So

Z = \frac{X - \mu}{\sigma}

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2.28% probability that a person selected at random will have an IQ of 110 or higher

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2 years ago
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