A statistical analysis of 1,000 long-distance telephone calls made from the headquarters of Johnson & Shurgot Corp. indicates that the length of these calls is normally distributed with a mean of 240 seconds and a standard deviation of 40 seconds. What percentage of these calls lasted less than 180 seconds (3 minutes)
United Motors claims that one of its cars, the Starbird 300, gets city driving mileages that are normally distributed with a mean of 30 mpg and a standard deviation of 1.5 mpg. If you randomly select and purchase a Starbird 300, what is the probability that your car will get less than 27 mpg