1.Assume the sample variances to be continuous measurements Find the probability that a random sample of 25 observations, froma normal population with variance ?2=6 will have avariance s^2
a) greater than 9.1
b) between 3.462 and 10.745.
2.A bolt located 50 mm fm he center of an automobile wheel is tightened by applying the couple shown for 0.10 s. Assuming that the wheel is free to rotate and is initially at rest, determine the resulting angular velocity of the wheel. The wheel has a mass of 19 kg and has a radius of gyration of 250 mm.