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MATH SOLVE
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Scores on a standardized test are normally distributed with a mean of 350 and a standard deviation o...
4 months ago
Q:
Scores on a standardized test are normally distributed with a mean of 350 and a standard deviation of 25. Approximately what percent of students scored between 360 and 380?
Accepted Solution
A:
(360) = 10/25 = .4
z(380) = 30/25 = 1.2
P(350 < x < 380) = normalcdf(.4, 1.2)