D Question 7
1 pts
SAT Mathematics scores are normally distributed with a mean of 500 and a standard
deviation of 100.
What percent of students who took the test have a mathematics score above 390?
86.43%
O 27.15%
13.57%
46.15%
RI
a

What is the standard deviation of the following data set rounded to the nearest tenth? 3, 17, 18, 15, 12, 21, 9

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