1.Which set of characteristics is most likely to produce a significant diffrence for an independent-measurs t test?

a. large sample sizes and large sample variances
b. large sample sizes and small sample variances
c. small sample sizes and large sample variances
d. small sample sizes and small sample variances

2. One sample has a variance of s2=6 and a second sample has a variance of s2=8. If the two samples are the same size (n1=n2), then what is the pooled variance for the two samples?

a. 6
b. 7
c. 8
d. 14

3. Which of the following sets of data provides the clearest diffrence between the two samples?

a. One sample has M=20 with s2=10 and the other has M=25 with s2=10
b. One sample has M=20 with s2= 5 and the other has M=25 with s2=5
c. One sample has M=20 with s2=10 and the other has M=30 with s2=10
d. One sample has M=20 with s2= 5 and the other has M=30 with s2=5