Mathematics, 07.03.2020 05:05 JvGaming2001
At one ACT test location students taking the test for a second time volunteered to inhale supplemental oxygen for 5 minutes before the test. In fact, some received oxygen, but others (randomly assigned) were given just normal air. Test results showed that 42 of 66 students who breathed oxygen improved their ACT scores, compared to only 35 of 63 students who did not get the oxygen. Which procedure should we use to see if there is evidence that breathing extra oxygen can help test-takers think more clearly?
2-sample t-test
matched pairs t-test
1-proportion z-test
2-proportion z-test
1-sample t-test
Answers: 3
Mathematics, 21.06.2019 16:30, hasshh
Identify the converse of the following conditional: if a point is in the first quadrant, then its coordinates are positive. if the coordinates of a point are not positive, then the point is not in the first quadrant. if the coordinates of a point are positive, then the point is in the first quadrant. if a point is in the first quadrant, then its coordinates are positive. if a point is not in the first quadrant, then the coordinates of the point are not positive.
Answers: 2
Mathematics, 21.06.2019 18:00, RickyGotFanz4867
What is the upper quartile in the box plot?
Answers: 1
Mathematics, 21.06.2019 19:30, sk9600930
Sundar used linear combination to solve the system of equations shown. he did so by multiplying the first equation by 5 and the second equation by another number to eliminate the y-terms. what number did sundar multiply the second equation by? 2x+9y=41 3x+5y=36
Answers: 1
At one ACT test location students taking the test for a second time volunteered to inhale supplement...
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