what is the probability that a random chosen tire has a lifetime greater than 48 thousand miles

Tire lifetimes: The lifetime of a certain type of automobile tire (in thousands of miles) is normally distributed with mean u= 39 and standard deviation o = 4. Use the TI-84 Plus calculator to answer the following. olo (a) What is the probability that a randomly chosen tire has a lifetime greater than 48 thousand miles? (b) What proportion of tires have lifetimes between 38 and 43 thousand miles? (c) What proportion of tires have lifetimes less than 47 thousand miles? Round the answers to at least four decimal places. Part: 0 / 3 Part 1 of 3 The probability that a randomly chosen tire has a lifetime greater than 48 thousand miles is