An independent-measures research study uses two samples, each with n = 10, to co
ID: 3385092 • Letter: A
Question
An independent-measures research study uses two samples, each with n = 10, to compare two treatments. If the results are evaluated with a t statistic using a two-tailed test with a = .05, then the critical region would have boundaries of ____.
t = ±2.101
t = ±2.262
t = ±2.086
t = ±2.093
The results of an independent-measures research study are reported as "t(5) = -2.12, p > .05, two tails." What statistical decision was made?
The researcher failed to reject H0.
There was a marginally significant effect.
Cannot be determined from the researcher's statement
The null hypothesis was rejected.
Which of the following research situations is most likely to use an independent-measures design?
Evaluate the effectiveness of a pain reliever by measuring how much pain is reduced after taking the medication.
Evaluate the development of verbal skills between age 2 and age 3 for a sample of girls.
Evaluate the effectiveness of a cholesterol medication by comparing cholesterol levels before and after the medication.
Evaluate the difference in self-esteem between student athletes and non-athletes.
Explanation / Answer
An independent-measures research study uses two samples, each with n = 10, to compare two treatments. If the results are evaluated with a t statistic using a two-tailed test with a = .05, then the critical region would have boundaries of t(0.05,n-1)=t(0.05,9)=+/-2.262
The results of an independent-measures research study are reported as "t(5) = -2.12, p > .05, two tails. Thus, the statistical decision is The researcher failed to reject H0 as p value is greater than 0.05.
Evaluate the development of verbal skills between age 2 and age 3 for a sample of girls- independent-measures design.
Evaluate the difference in self-esteem between student athletes and non-athletes.- independent-measures design.
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