Examine the rotation. Which best describes point D? А
O angle of rotation
O center of rotation
B
'
O image
O pre-image
A'
O
Intro

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”?