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. The null hypothesis is
A) µ = 6.6
B) µ $\ge$ 6.6
C) µ 7.6
D) µ $\le$ 7.6

Question

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. The null hypothesis is
A) µ = 6.6
B) µ $\ge$ 6.6
C) µ > 7.6
D) µ $\le$ 7.6

Quizplus · Accepted Answer

The null hypothesis always assumes that the population parameter (in this case, the mean weight of newborns) is equal to a specific value (in this case, 6.6 pounds). Therefore, the null hypothesis is µ = 6.6, which is choice A.

A Hypothesis Regarding the Weight of Newborn Infants at a Community