According to the bar graph, which attribute is under investigation?
a) the height of students.
b) the height of teachers.
c) the number of students in class.
d) the heights of students and teachers.

How do your peer relationships affect your overall health status? what can you do to improve your peer relationships?

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”?

You eat $0.85 for every cup of hot chocolate you sell. how many cups do you need to sell to earn $55.25