The mean weight of newborn infants at a community hospital is 6.6 pounds.A sample of seven infants is randomly selected and their weights at birth are recorded as 9.0,7.3,6.0,8.8,6.8,8.4,and 6.6 pounds.What is the degree of freedom?
A)7
B)8
C)6
D)6.6
E)7.6

Question

Quizplus · Accepted Answer

The degree of freedom for a one-sample t-test is the number of observations minus one. In this case, there are seven infants in the sample, so the degree of freedom is 7-1 = 6. Therefore, the correct answer is choice C.

The Mean Weight of Newborn Infants at a Community Hospital