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​A repeated-measures study comparing two treatments with n = 4 participants produces MD = 2 and SS = 75 for the difference scores. What is the estimated standard error for the sample mean difference? Group of answer choices ​25 ​25/4 = 6.25 ​5 2.5​

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funmilaciousfunmie78

Answer:

2.5

Step-by-step explanation:

n = 4 participants

MD = 2, SS = 75

Estimated standard error, s² =[tex]\frac{SS}{n-1}[/tex]

                                             = [tex]\frac{75}{4-1}[/tex] = 25

Standard error = [tex]\sqrt{\frac{Estimated standard error}{n} }[/tex] = [tex]\sqrt{\frac{25}{4}}[/tex] = 2.5

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