Marcos went to buy a new hat. He bought a hat for himself, his brother and his dad too. He handed the guy at the cash register $60 and the cashier gave him $5.10 back. If each hat cost the same, how much did he pay for each hat?

What is the interquartile range of this data set? 2, 5, 9, 11, 18, 30, 42, 48, 55, 73, 81

Consider a bag that contains 220 coins of which 6 are rare indian pennies. for the given pair of events a and b, complete parts (a) and (b) below. a: when one of the 220 coins is randomly selected, it is one of the 6 indian pennies. b: when another one of the 220 coins is randomly selected (with replacement), it is also one of the 6 indian pennies. a. determine whether events a and b are independent or dependent. b. find p(a and b), the probability that events a and b both occur.

Compound inequalities. , i’m being timed