How to find the mean in a stem and leaf plot

The only way to identify an intercept is as an ordered pair. true false

Sasha drank 8 bottles of water everyday for a week. how many bottles of water did she drink in total?

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”?