A Reading Readiness Test Is Administered to 8 Matched Pairs

Multiple Choice

A reading readiness test is administered to 8 matched pairs of first graders.One child of each pair had 3 years of day care experience whereas the other child had none.The results of the test are shown in the following table.(Higher scores indicate greater readiness. ) Assume á=.05,nondirectional test.
The df for this problem is _______.

A) 14
B) 6
C) 7
D) 12