WILL FAN AND MEDAL The grades on the last art exam had a mean of 75%. Assume the population of grades on art exams is known to be distributed normally, with a standard deviation of 7%. Approximately what percent of students earn a score between 75% and 82%? 37.2% 84.1% 34.1% 50%

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ohh snap, these problems! X_X

I know that i need to use the z-Score formula, But now when it says "between %75 and %82" ZSCORE = \[z= \frac{ \mu - x }{ }\]

whoops theres supposed to be a sigma under that

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