Question 1 Find P(= 2 1.75) A 0.040 B 0.960 0.175 D 0.031\fQuestion 3 1 Point The life of a tire is normally distributed with a mean of 30,000 km. The standard deviation is 2000 km. What is the probability that a randomly selected tire lasts at least 33,500 km? A 0.189 B 0.896 0.040 D 0.960Question 4 1 Point The distribution of heights of adult American men is approximately normal with a mean of 69 inches and a standard deviation of 2.5 inched. What is the probability that a randomly selected man is between 65 and 68 inches? A 0.540 B 0.060 0.374 D 0.290A concerned parents group determined the number of commercials shown in each of five children's programs over a period of time. The probability distribution of these observations is shown below. What is the standard deviation of commercials during a children's program? X 5 6 7 8 9 P(X) 0.2 0.25 0.4 0.1 0.05 A 44.05 B 6.55 1.1475 D 1.0721