Mathematics, 24.04.2020 01:02 timmonskids2681
Indicate the correct test procedure and reasoning. A researcher wishes to determine whether listening to music affects students' performance on memory test. He randomly selects 50 students and has each student perform a memory test once while listening to music and once without listening to music. He obtains the mean and standard deviation of the 50 "with music" scores and obtains the mean and standard deviation of the 50 "without music scores" O
A. Two-sample t-test, since the researcher has two samples. Paired t-test, since there is a "with music" and "without music" score for each person.
B. z-test for each sample, since the researcher has the sample standard deviation.
C. Not enough information given to determine correct type of test.
D. Pooled t-test, since the standard deviation is likely to be the same in both populations
Answers: 1
Mathematics, 21.06.2019 18:20, sweetbri7p5v6tn
Me solve this problem, and someone clearly explain to me how to solve it.1.) use the value of the discriminant to determine if the given trinomials has 2 real solutions, 1 real solution, or no real solutions. a. x2 − 4x − 7 = 0b. 4r2 + 11r − 3 = 0c. 3m2 + 7 = 0d. t2 + 2t + 1 = 0
Answers: 1
Indicate the correct test procedure and reasoning. A researcher wishes to determine whether listenin...
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