The mean weight of newborn infants at a community hospital a 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. Thus s = 1.177 and X = 7.6. The null hypothesis is mu = 6.6. If alpha = 0.05, what is the critical t value?a) -2.365b) ±1.96C) ±2.365D) ±2.447E) -2.447