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The scores for both groups (math and history) are normally distributed. The mean of the mathsample is 70, with a standard deviation of 5. The mean of the history sample is 70 with a
standard deviation of 10.
1. In the space below, draw the distributions of math and history students on one graph.
Note: there should be two curves on the graph, one for the math sample, and one for
the history sample. Don't forget to label and assign numbers for the x-axis.
2. Damien scored an 80 on the Rosenberg scale. If he is in the history sample, what is
Damien's percentile? In other words, how much of the sample scored below Damien?
Show your work.

Sagot :

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