Question

. A researcher wanted to compare the blood sugar level before and after breakfast among the same

population. There were 100 participants in this study. The researcher measured their blood sugar
level 30 minutes before breakfast and then he measured their blood sugar level again 30 minutes
after breakfast. If he wanted to compare the mean blood sugar before and after breakfast by using a
two-tailed t test, how many degrees of freedom were there?

Answer 1

(100+100)-2 = 198

Explanation:

Degree of freedom of two samples is given by (n1+n2)-2...