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Two Separate Samples Are Being Used to Estimate the Population

Question 2

Multiple Choice

Two separate samples are being used to estimate the population mean difference between two treatment conditions.Which of the following would produce the widest confidence interval?


A) n1 = n2 = 10 with a pooled variance of 10
B) n1 = n2 = 10 with a pooled variance of 100
C) n1 = n2 = 20 with a pooled variance of 10
D) n1 = n2 = 20 with a pooled variance of 100

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