A sample of n=9 individuals are selected from a population with a mean of μ=10. A researcher suspects that after the individuals have gone through a specific type of treatment, their performances on a standardized examination will be different from the general population. After the treatment, the sample has a M=13 and s2=9. Using symbols, state the hypothesis for a two-tailed test. Calculate the t statistic. With a two-tail α=0.05, state the conclusion of these findings. Calculate the estimated d and state the effect size (i.e., small, medium, large).
A sample of n=9 individuals are selected from a population with a mean of μ=10. A researcher suspects that after the individuals have gone through a specific type of treatment, their performances on a standardized examination will be different from the general population. After the treatment, the sample has a M=13 and s2=9. Using symbols, state the hypothesis for a two-tailed test. Calculate the t statistic. With a two-tail α=0.05, state the conclusion of these findings. Calculate the estimated d and state the effect size (i.e., small, medium, large).
Ciccarelli: Psychology_5 (5th Edition)
5th Edition
ISBN:9780134477961
Author:Saundra K. Ciccarelli, J. Noland White
Publisher:Saundra K. Ciccarelli, J. Noland White
Chapter1: The Science Of Psychology
Section: Chapter Questions
Problem 1TY
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- A sample of n=9 individuals are selected from a population with a mean of μ=10. A researcher suspects that after the individuals have gone through a specific type of treatment, their performances on a standardized examination will be different from the general population. After the treatment, the sample has a M=13 and s2=9.
- Using symbols, state the hypothesis for a two-tailed test.
- Calculate the t statistic.
- With a two-tail α=0.05, state the conclusion of these findings.
- Calculate the estimated d and state the effect size (i.e., small, medium, large).
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