A hypothesis regarding the weight of newborn infants at a co

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?

Solution

degree of freedom : n-1

n = the sample size

n = 7

degree of freedom = 7-1 =6