The Mean Weight of Newborn Infants at a Community Hospital $\alpha$

Multiple Choice

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.If $\alpha$ = 0.05,what is the critical t value?

A) -2.365
B) $\pm$ 1.96
C) $\pm$ 2.365
D) $\pm$ 2.447
E) -2.447