Apool company is creating an image for a chant that has the look at a 3-d image for a family pool and a similar dog pool find the value of the drawing below.

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”?