Mathematics, 19.05.2020 22:58 pineapplepizaaaaa
In a randomized comparative experiment on the effect of color on the performance of a cognitive task, researchers randomly divided 69 subjects (31 males and 38 females ranging in age from 17 to 25 years) into three groups. Participants were asked to solve a series of 6 anagrams. One group was presented with the anagrams on a blue screen; one group saw them on a red screen; and one group had a neutral screen. The time, in seconds, taken to solve the anagrams was recorded. The paper reporting the study gives x⎯⎯⎯=11.5 and s=4.4 for the times of the n= 21 members of the neutral group.
A. Give a 95% confidence interval for the mean time in the population from which the subjects were recruited. B. What conditions for the population and the study design are required by the procedure you used?
C. Which of these conditions are important for the validity of the procedure in this case?
Answers: 1
Mathematics, 21.06.2019 18:00, bravomichelle75
Aschool puts on a play. the play costs $1,200 in expenses. the students charge $4.00 for tickets. there will be one performance of the play in an auditorium that seats 500 people. what is the domain of the function that shows the profit as a function of the number of tickets sold?
Answers: 2
Mathematics, 21.06.2019 20:30, cld3331
Merrida uses a pattern in the multiplication table below to find ratios that are equivalent to 7: 9. if merrida multiplies the first term, 7, by a factor of 6, what should she do to find the other term for the equivalent ratio? multiply 9 by 1. multiply 9 by 6. multiply 9 by 7. multiply 9 by 9.
Answers: 1
In a randomized comparative experiment on the effect of color on the performance of a cognitive task...
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