Mathematics, 27.11.2019 01:31, mamatonya5p5jl11
In 2013, psychology researchers conducted an experiment featuring 40 undergraduate college students, each of whom took a 20-question general-knowledge test on a computer. participants were given four possible answers and instructed to pick the correct one. before doing so, half the students were told that just before each question was asked, the correct answer was momentarily flashed onto the screen. they were informed that this happened too quickly for them to process the information consciously, but assured that it would register in their brains. this was the placebo treatment. in the control treatment participants were not told this. the researchers write that: "participants in the placebo condition who believed they had been exposed to the correct answers subliminally scored higher than participants in the control condition." the researchers conducted a hypothesis test to determine if the proportion of correct answers is significantly different for participants in the placebo condition and participants in the control condition (placebo proportion minus control proportion). the p-value is 0.02. what can the researchers conclude? a. researchers reject the null hypothesis. the proportion of correct answers for participants in the placebo condition is no different than the proportion of correct answers for participants in the control group. b.researchers reject the null hypothesis. the proportion of correct answers is significantly different for the placebo condition and the control group. c.researchers reject the null hypothesis. the proportion of correct answers for participants in the placebo condition is significantly higher than the proportion of correct answers for participants in the control group. d.researchers fail to reject the null hypothesis. the proportion of correct answers is different, but not significantly different.
Answers: 3
Mathematics, 21.06.2019 19:00, munozgiselle
If (x-2) 2= 49, then x could be a. -9 b. -7 c.- 2 d. 5 e.9
Answers: 2
Mathematics, 22.06.2019 00:00, maddiemccarter3892
Which of the following would be a correct step in proving that triangle abc is congruent to triangle cda? a. use a protractor to measure the angles and show that all the corresponding angles are equal in measure. this will allow you to prove congruence by aaa. b. show that segment ab is parallel to segment cd and segment ad is parallel to segment cb. this will allow you to prove congruency by asa. c. show that is segment ab is perpendicular to segment ad. this will allow you to prove congruence by sas. d. none of the above.
Answers: 2
Mathematics, 22.06.2019 05:30, dreawongdga
It takes 6 days to put together a computer game. write an algebra equation to describe the number of days, it takes to create n computer game. how many days will it take to create 15 games? show work
Answers: 1
In 2013, psychology researchers conducted an experiment featuring 40 undergraduate college students,...
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