To evaluate 82/3 find A)
the square of 8 and then take the cube root.
B)
the cube of 8 and then take the square root.
the square root of 3 times the cube root of 8.
D)
the cube root of 8 and then take the square root.

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?