There are 5 red marbles, 8 blue marbles, and 12 green marbles in a bag. Several trials are performed with the results shown in the table. What is the experimental probability of randomly drawing a green marble? Red Blue Green 10 12 28 48% 24% 28% 56%

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?

The cost of using a service is $0.25 per min. what equation correctly represents the total cost c, in dollars, for d days of use?

Out of $20$ creepy-crawly creatures in a room, $80\%$ are flies and $20\%$ are spiders. if $s\%$ of the total legs belong to spiders, what is $s$?