Question

5. The "Mozart Effect" pertains to a hypothesis that listening to Mozart might have an effect on the performance of certain kinds of mental tasks. A team of researchers were interested in seeing if this would apply to a general intelligence test. They do not know if this will improve or lower scores for this particular task but they collected data from two groups: (/12) No Music | Music 1 | 2 10 | 12 7 | 6 3 | 5 2 | 3 0 | 1 3 | 2 13 | 16 0 | 0 5 | 8 a. Treating these two groups as independent, answer the following: * State the hypotheses for this analysis and if this is a one- or two-tailed test. * State your alpha value and the critical values. * Test this hypothesis (showing your calculations). * State your decision regarding the null hypothesis. b. Now, conduct those four steps again but treat these two groups as dependent (e.g., each row now belongs to the same person in a repeated-measures design). c. Do the two tests lead to different conclusions? Comment on why or why not.

          5. The "Mozart Effect" pertains to a hypothesis that listening to Mozart might have an effect on the performance of certain kinds of mental tasks. A team of researchers were interested in seeing if this would apply to a general intelligence test. They do not know if this will improve or lower scores for this particular task but they collected data from two groups: (/12)

No Music | Music
1 | 2
10 | 12
7 | 6
3 | 5
2 | 3
0 | 1
3 | 2
13 | 16
0 | 0
5 | 8

a. Treating these two groups as independent, answer the following:
* State the hypotheses for this analysis and if this is a one- or two-tailed test.
* State your alpha value and the critical values.
* Test this hypothesis (showing your calculations).
* State your decision regarding the null hypothesis.
b. Now, conduct those four steps again but treat these two groups as dependent (e.g., each row now belongs to the same person in a repeated-measures design).
c. Do the two tests lead to different conclusions? Comment on why or why not.

5. The "Mozart Effect" pertains to a hypothesis that listening to Mozart might have an effect on the performance of certain kinds of mental tasks. A team of researchers were interested in seeing if this would apply to a general intelligence test. They do not know if this will improve or lower scores for this particular task but they collected data from two groups: (/12)

No Music | Music
1 | 2
10 | 12
7 | 6
3 | 5
2 | 3
0 | 1
3 | 2
13 | 16
0 | 0
5 | 8

a. Treating these two groups as independent, answer the following:
* State the hypotheses for this analysis and if this is a one- or two-tailed test.
* State your alpha value and the critical values.
* Test this hypothesis (showing your calculations).
* State your decision regarding the null hypothesis.
b. Now, conduct those four steps again but treat these two groups as dependent (e.g., each row now belongs to the same person in a repeated-measures design).
c. Do the two tests lead to different conclusions? Comment on why or why not.

Added by Elena L.

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