An english instructor asserted that students' test grades are directly proportional to the amount of time spent studying. lisa studies 9 hr for a particular test and gets a score of 72. at this rate, how many hours would she have had to study to get a score of 95?

Astandard deck of cards contains 52 cards. one card is selected from the deck. (a) compute the probability of randomly selecting a seven or king. (b) compute the probability of randomly selecting a seven or king or jack. (c) compute the probability of randomly selecting a queen or spade.

Which of the following is most likely the next step in the series? a3z, b6y, c9x, d12w, е15v, f18u

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?