"With alpha equal to .05, a two-tailed independent-samples t test showed similar number of days to lose 5 pounds between the Atkins diet (M=45.8, SD=5.2) and the South Beach diet (M=42.4, SD=5.1), t (62)=1.3, p=.63.” From this report, 1) was the null hypothesis rejected in this study? Please answer or circle Yes/No       2) calculate the effect size of η2  in this study (show steps).

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A: Solution Given the test is a left tailed test  So the alternative hypothesis is left tailed.

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A: Given data and calculation of Rank is shown below

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A: Solution Answer is option C)

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Q: What is the critical value for a two tailed z-test with an alpha = .004?

A:

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A: From the provided information, Sample size (n) = 15 Sample mean (x̅) = 26 Sample standard deviation…

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A: Decision Rule: If p-value ≤ α, then reject the null hypothesis. Conclusion: The level of…

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A: Solution

Q: Lightbulbs of a certain type are advertised as having an average lifetime of 750 hours. The price of…

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A:

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A:

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