Four books, one each on physics, chemistry, mathematics, and biology are about to be stacked on a shelf. if the books are stacked randomly, what is the probability the mathematics book is on top?

What is the range? can’t seem to find it out

Elizabeth is using a sample to study american alligators. she plots the lengths of their tails against their total lengths to find the relationship between the two attributes. which point is an outlier in this data set?

Use sigma notation to represent the following series for 9 terms.