Suppose an amount increase by 100%, then decreases by 100%

Mathematics

1 answer:

shepuryov [24]4 years ago

6 0

The first situation would be 0 but if it was 150% there would be no change because your multiplying 0 by 150% so no the situation would not change

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All 10,000 California students in the beginning of 8th grade are given an entrance exam that will allow them to attend a top aca

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1.32% of students have the chance to attend the charter school.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be 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.

This year the mean on the entrance exam was an 82 with a standard deviation of 4.5.

This means that $\mu = 82, \sigma = 4.5$