Suppose that the distribution of typing speed in words per minute (wpm) for experienced typists using a new type of split keyboard can be approximated by a normal curve with mean 64 wpm and standard...

Extracted text: Suppose that the distribution of typing speed in words per minute (wpm) for experienced typists using a new type of split keyboard can be approximated by a normal curve with mean 64 wpm and standard deviation 16 wpm. In USE SALT (a) What is the probability that a randomly selected typist's speed is at most 64 wpm? (b) What is the probability that a randomly selected typist's speed is less than 64 wpm? (c) What is the probability that a randomly selected typist's speed is between 32 and 80 wpm? (Round your answer to four decimal places.) You may need to use the appropriate table in the appendix to answer this question.