Soive the problem. 6) Human body temperatures are normally distributed with a mean of 98.20%: and a standard deviation of 0.62F. if 19 people are randomly selected, find the probability that their mean body temperature wiil be less than 98.50F. A) 0.9826 B) 0.3343 0) 0.4826 D) 0.0833 7) A study of the amount of time it takes a mechanic to rebuild the transmission for a 2005 Chevrolet Cavalier shows that the mean is 8.4 hours and the standard deviation is 1.8 hours. If 4:0 mechanics are randomly selected, find the probability that their mean rebuild time exceeds 8.1 hours. A) 0.7285 B) 0.9146 0) 0.8531 D) 0.8457 3) 7)