subject
Mathematics, 26.10.2019 01:43 mprjug6

Suppose we have collected times, in minutes, that it takes volunteers to complete a set of pencil and paper mazes. volunteers are randomly assigned to one of two groups. group 1 watch a 5 minute video explaining good strategies for completing the mazes. group 2 watch a 5 minute video of other people successfully completing the mazes, but with no explanation given. researchers are interested in testing against the null hypothesis that there is no difference in population mean times that it takes people to complete mazes after watching either type of video. there are the summary statistics after collecting data. note that the sample sizes differ, because some subjects did not follow instructions correctly and so they were not included in the analysis. x1 = 11.98, x2 = 9.15s1 = 8.69, s2 = 7.75n1 = 43, n2 = 52a. is this an experimental or observational study?

ansver
Answers: 2

Other questions on the subject: Mathematics

image
Mathematics, 21.06.2019 14:30, shanicar33500
Find the value of tan theta if sin theta = 12/13 and theta is in quadrant 2
Answers: 1
image
Mathematics, 21.06.2019 15:20, Graciesett4072
Use the x-intercept method to find all real solutions of the equation. -9x^3-7x^2-96x+36=3x^3+x^2-3x+8
Answers: 1
image
Mathematics, 21.06.2019 17:10, sanchez626
Determine whether the points (–3,–6) and (2,–8) are in the solution set of the system of inequalities below. x ? –3 y < 5? 3x + 2 a. the point (–3,–6) is not in the solution set, and the point (2,–8) is in the solution set. b. neither of the points is in the solution set. c. the point (–3,–6) is in the solution set, and the point (2,–8) is not in the solution set. d. both points are in the solution set.
Answers: 3
image
Mathematics, 21.06.2019 17:40, marie1211
Polynomial that can be factored as (3x-4)(3x+4)
Answers: 1
You know the right answer?
Suppose we have collected times, in minutes, that it takes volunteers to complete a set of pencil an...

Questions in other subjects:

Konu
Mathematics, 03.08.2019 18:30
Konu
Mathematics, 03.08.2019 18:30