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A researcher conducts an independent-measures study. One sample of individuals serves as a control group and...

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Basic Math

A researcher conducts an independent-measures study. One sampleof individuals serves as a control group and another sample servesas a treatment group. The researcher hypothesizes that the twosamples will be different on the dependent variable.

The data are as follows:

ControlTreatment
n = 6n = 9
M = 56M = 62
SS = 470SS = 700

? = .05, two-tailed

a.) Following the steps of a hypothesis test, first determinewhether the two groups differ in terms of their sample means.

b.) Second, calculate Cohen’s d and r2.

c.) Finally, Write a sentence demonstrating how the results ofthe hypothesis test and the measure of effect size (use either d orr2) would appear in a research report.

Answer & Explanation Solved by verified expert
3.7 Ratings (321 Votes)
a s1 SSn 1 4705 9695 s2 7008 9354 Data n1 6 n2 9 x1bar 56 x2bar 62 s1 9695 s2 9354 Hypotheses Ho 1 2 Ha 1 2 Decision Rule 005 Degrees of freedom 6 9 2 13 Lower Critical t score    See Answer
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