A hypothesis regarding the weight of newborn infants at a community hospital is that the mean 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

Question

Quizplus · Accepted Answer

The degree of freedom in a t-test is calculated as follows: df = n - 1, where n is the sample size. In this case, n = 7. Therefore, df = 7 -1 = 6. Therefore, choice C is correct. Choice A, B, and D are incorrect as they do not correspond to the correct calculation of degrees of freedom.

A Hypothesis Regarding the Weight of Newborn Infants at a Community