A group of kinesiology students wanted to know if individuals who took group fitness classes lost more weight than individuals who worked out on their own. They obtained a sample of 70 individuals who wanted to lose weight. The first 35 participants to show up for the study were assigned to the group fitness condition; they attended a group fitness class twice a week. The second 35 participants were assigned to the individual workout condition; they worked out alone in the gym twice a week. Change in weight over a 15 week period was recorded and compared for the two groups.

Is this an observational or experimental study?

Jeffery conducted a survey in his school and found that 30 of the 50 eighth grade students' favorite subject is mathematics. based on the results, jeffery concluded that out of the 200 students in his school, 120 students' favorite subject is mathematics. select the statement that is true about jeffery's conclusion. a. jeffery's conclusion is not valid because the sample was biased since only 200 students were surveyed. b. jeffery's conclusion is valid because the sample was random since all of the students were eighth grade students. c. jeffery's conclusion is valid because the sample was random. d. jeffery's conclusion is not valid because the sample was biased since all of the students were eighth grade students.

Select the graph of the solution. click until the correct graph appears. |x| = 3

Ke’ajah has a coupon for 1/3 off the regular price, t, of a tent. which expression represents the price of the tent using the coupon? select the two correct expressions. a. 1/3t b. 2/3t c. t - 1/3 d. t - 2/3 e. t - 1/3t f. t - 2/3t