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
Correct Answer:

Verified
Correct Answer:
Verified
Q1: One sample has s² = 12,and a
Q3: A researcher reports an independent-measures t statistic
Q4: One sample has n = 5 scores
Q6: The following data are from an
Q7: If an independent-measures design is being used
Q8: What is the average value expected for
Q9: Assuming a 5-point difference between the two
Q10: For an independent-measures t statistic,what is the
Q11: Which of the following sets of data
Q41: The 95% confidence interval for the difference