Calculate the mean and variance of the sample data set provided below. show and explain your steps. round to the nearest tenth. 14, 16, 7, 9, 11, 13, 8, 10

Ling listed all of the factors of a mystery number: 1,2,4,8,16,32 what is the mystery number?

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”?

I'm a polygon i have no parallel lines i am formed 3 line segments i have one right angle two of my angles are angles what am i