A About what percent of the total number of cars are hopper cars? B About what percent of the total number of cars are gondola or
Cars i
Gondola ca
T
Tank car

Explain how you can use the associative property to evaluate (7x50)x4.

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”?

How do you find the distance of each number from the mean