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3 years ago

Need help ASAP please

Mathematics

1 answer:

monitta3 years ago

7 0

Answer:

5 inches is <u>5</u> times as big as 1 inch.
12.7 centimeters is <u>5</u> times as big as 2.54 centimeters.

Step-by-step explanation:

5 ÷ 1 = 5
12.7 ÷ 2.54 = 5

I hope this helps!

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Read 2 more answers

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:

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

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

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

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

$Z = \frac{110 - 100}{5}$

$Z = 2$

$Z = 2$ has a pvalue of 0.0228

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

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3 years ago

Please help! Correct answer only!

goldfiish [28.3K]

Answer:

$15

Step-by-step explanation:

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3 years ago