Denise and stacey went to a carnival. the admission fee was $6 per person. each ride at the carnival costs c dollars. the game booths charged g dollars for each game. both denise and stacey went on 7 rides each. stacey played 3 games, while denise played 2 games. which expression represents the total amount of money that denise and stacey spent at the carnival?

Which data set has a greater spread? why? set a: {38, 12, 23, 48, 55, 16, 18} set b: {44, 13, 24, 12, 56} has a greater spread because .

Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?