Mathematics, 30.06.2020 15:01 Jazminfun70
To determine the relative effectiveness of different study strategies for the SAT, suppose three groups of students are randomly selected: One group took the SAT without any prior studying; the second group took the SAT after studying on their own from a common study booklet available in the bookstore; and the third group took the SAT after completing a paid summer study session from a private test-prep company. The means and standard deviations of the resulting SAT scores from this hypothetical study are summarized below:
n x s
Group1 12 1014.1 4.9
Group2 12 1015.8 5.1
Group3 9 1023.7 5.7
Use the following output
Analysis for variance of SAT
DF SS MS F P
Group 2 625.2 312.6 11.43 0.000
Error 30 820.7 27.4
total 32 1445.9
we can conclude that:
(a) the data provide strong evidence that SAT scores are related to learning strategy.
(b) the data provide strong evidence that SAT scores are related to learning strategy in the following way: The mean SAT score for students who pay for coaching is higher than the mean SAT score for students who study themselves, which in turn is higher than that of students who do not study for the test.
(c) the data provide strong evidence that the three mean SAT scores (representing the three learning strategies) are not all equal.
(d) the data do not provide sufficient evidence that SAT scores are related to learning strategy.
(e) Both (a) and (c) are correct.
Answers: 1
Mathematics, 21.06.2019 15:30
The area of a rectangle is 15+5y square feet. which of the following expressions could be the length of the sides of the rectangle, in feet a. 5 and 3y b. 5 and 3+y c. 5 and 5+y d. 3 and 5+3y
Answers: 1
Mathematics, 21.06.2019 20:00
Karen will divide her garden into equal parts. she will plant corn in 8/12 of the garden. what is the lowest number of parts she can divide her garden into?
Answers: 1
Mathematics, 21.06.2019 20:30
Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.
Answers: 1
Mathematics, 21.06.2019 20:40
Ineed someone to me answer my question i have to have this done and knocked out
Answers: 2
To determine the relative effectiveness of different study strategies for the SAT, suppose three gro...
Mathematics, 24.05.2021 17:50
Mathematics, 24.05.2021 17:50
Mathematics, 24.05.2021 17:50
Physics, 24.05.2021 17:50
Mathematics, 24.05.2021 17:50
Mathematics, 24.05.2021 17:50
Mathematics, 24.05.2021 17:50
Mathematics, 24.05.2021 17:50
Computers and Technology, 24.05.2021 17:50