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20 July, 20:32

If Jeremy is in the 90th percentile and the mean of his test scores is 180 with a standard deviation of 15, which of the following scores with Jeremy most likely get on a standardized test?

A 210

B 180

C 199

D 249

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Answers (1)
  1. 20 July, 21:54
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    I think the answer is B. 180. This is because the mean of Jeremy's test score is 180 with a standard deviation of 15 which means that his test score is likely to fall within the range of 180 plus or minus 15 or from 165 - 195. Among the choices, only 180 fit in the predicted range. Note, that the standard deviation is a measure of the dispersion of the data in a data set.
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