The annual sales for salespeople at a business machine company is normally distributed with =$400,000 and =$20,000. What is the probability that a salesperson has annual sales of $440,000 ormore?

A jar of peanut butter contains 450 g with a standard deviation of 10.2 g. Find the probability that a jar contains more than 460 g. Assume a normal distribution.

The mean clotting time of blood is 7.45 seconds with a standard deviation of 3.6 seconds. What is the probability that anindividual's clotting time will be less than 7 seconds or greater than 9 seconds? Assume a normal distribution. This problem can be solved using technology or the table for the standard normal curve from your text.

Find the percent of the total area under the standard normal curve between the followingz-scores. This problem can be solved using technology or the table for the standard normal curve from your text. z=1.6 and z=0.5