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 sample mean?
A) 6.6
B) 7.6
C) 1.177
D) 2.447
E) None of these statements are true

Question

Quizplus · Accepted Answer

The sample mean is calculated by summing the weights and dividing by the number of infants: (9.0 + 7.3 + 6.0 + 8.8 + 6.8 + 8.4 + 6.6) / 7 = 7.6 pounds.

The Mean Weight of Newborn Infants at a Community Hospital