3. A researcher is interested in whether listening to music helps or hinders test-performance. To control for differences in cognitive level, this researcher decides to use a within-participants design. He selects a random sample of participants and has them study different material of equal difficulty in both the music and no music conditions. Participants take a 20-item quiz on the material. The table below shows the scores on the quiz. The study is completely counterbalanced to control for order effects
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Expert's answer
2011-02-21T06:38:24-0500
Unfortunately, there is no any data to answer to your question.
Music No Music 17 17 16 18 15 17 16 17 18 19 18 18 a. What statistical
test should be used to analyze the data? b. Is this a one- or two
tailed test? c. Identify H0 and Ha for this study. d. Conduct the
appropriate analysis. Should H0 be rejected? What should the
researcher conclude? e. Calculate the 95 confidence interval.
dion
11.03.11, 01:19
3. A researcher is interested in whether listening to music helps or
hinders test-performance. To control for differences in cognitive
level, this researcher decides to use a within-participants design. He
selects a random sample of participants and has them study different
material of equal difficulty in both the music and no music
conditions. Participants take a 20-item quiz on the material. The
table below shows the scores on the quiz. The study is completely
counterbalanced to control for order effects. The scores obtained are
measured on an interval-ratio scale and are normally distributed.
Music No Music 17 17 16 18 15 17 16 17 18 19 18 18 a. What statistical
test should be used to analyze the data? b. Is this a one- or two
tailed test? c. Identify H0 and Ha for this study. d. Conduct the
appropriate analysis. Should H0 be rejected? What should the
researcher conclude? e. Calculate the 95 confidence interval.
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Music No Music 17 17 16 18 15 17 16 17 18 19 18 18 a. What statistical test should be used to analyze the data? b. Is this a one- or two tailed test? c. Identify H0 and Ha for this study. d. Conduct the appropriate analysis. Should H0 be rejected? What should the researcher conclude? e. Calculate the 95 confidence interval.
3. A researcher is interested in whether listening to music helps or hinders test-performance. To control for differences in cognitive level, this researcher decides to use a within-participants design. He selects a random sample of participants and has them study different material of equal difficulty in both the music and no music conditions. Participants take a 20-item quiz on the material. The table below shows the scores on the quiz. The study is completely counterbalanced to control for order effects. The scores obtained are measured on an interval-ratio scale and are normally distributed. Music No Music 17 17 16 18 15 17 16 17 18 19 18 18 a. What statistical test should be used to analyze the data? b. Is this a one- or two tailed test? c. Identify H0 and Ha for this study. d. Conduct the appropriate analysis. Should H0 be rejected? What should the researcher conclude? e. Calculate the 95 confidence interval.
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