Question 4 12 pts 9 1 8 Details Question #3 (12 points) Weights of a certain model of fully loaded gravel trucks follow a normal distribution with mean | = 8.6 tons and standard deviation o = 0.5 tons. What is the probability that a fully loaded truck of this model is: a.) More than 7.7 tons? b.) Less than 9.8 tons? c.) Between 8.1 and 8.8 tons? 10 pts 9 1 8 Details Question 5 Question #4 (10 points) The height of men is a normally distrubuted variable with a mean of 68.3 inches and a standard deviation of 3.2 inches