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stealth61 [152]
3 years ago
15

Round 3.6481 to the hundredths place (two decimal places).To the right

Mathematics
1 answer:
bekas [8.4K]3 years ago
4 0
The correct answer would be 3.65.
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Answer:

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Step-by-step explanation:

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In a certain year, when she was a high school senior, Idonna scored 671 on the mathematics part of the SAT. The distribution of
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Idonna's standardized score is 1.41.

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A.) Idonna's score is higher than Jonathan's

Step-by-step explanation:

Z-score:

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.

Idonna scored 671 on the mathematics part of the SAT. The distribution of SAT math scores in that year was Normal with mean 509 and standard deviation 115.

This means that her standardized score is Z when X = 671, \mu = 509, \sigma = 115. So

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

Z = \frac{671 - 509}{115}

Z = 1.41

Idonna's standardized score is 1.41.

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

Z = \frac{24 - 21.1}{5.3}

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Jonathan's standardized score is 0.55.

Due to the higher z-score, Iddona's has a higher score.

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one fourth

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