Statistical test should be used to analyzing data

Reference no: EM1386935

The researcher in exercise decides to conduct the same study using a within - participates design to control for differences in cognitive ability. He selects a random sample of subjects and has them study different material of equal difficulty in both the music and no music conditions. The study is completely counterbalanced to control for order effects. The data appear next. As before, they are measured on an - interval - ratio scale and are normally distributed; he believes that studying under quiet conditions will lead to better performance.

Music No Music

7         7
6         8
5         7
6         7
8         9
8         8

a) What statistical test should be used to analyze these data?

b) Identify Ho and Ha for this study?

c) Conduct the proper analysis.

d) Should Ho be rejected? What should the researcher conclude?

e) If significant draw a graph representing the data.

f) Determine the 95% confidence interval.

Reference no: EM1386935

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