Suppose you choose four books to read from a summer reading
list of 12 books. How many
different combinations of books
are possible?
Note: nC,
n!
r!(n-r)!

The heaviest 16% of all men in weight weigh more than how many pounds ?

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?

Rachel is studying the population of a particular bird species in a national park. she observes every 10th bird of that species that she can find in the park. her conclusion is that the birds living in the park who belong to that species generally feed on insects. rachel's sample is . based on the sample she picked, rachel's generalization is . reset next