Suppose that the distribution of typing speed in words per minute wpm for experienced typists using a new type of split keyboard

Question

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 60 wpm and standard deviation 15 wpm t Round your answers to four decimal places LUSE SALT a What is the probability that a randomly selected typist s speed is at most 60 wpm What is the probability that a randomly selected typist s speed is less than 60 wpm b What is the probability that a randomly selected typist s speed is between 30 and 75 wpm c Would you be surprised to find a typist in this population whose speed exceeded 105 wpm It Select be surprising to find a typist in this population whose speed exceeded 105 wpm because the probability of finding such a typist is only d Suppose that two typists are independently selected What is the probability that both their speeds exceed 90 wpm e Suppose that special training is to be made available to the slowest 15 of the typists What typing speeds in wpm would qualify individuals for this training wpm or less is in the slowest 15 of typists Any typist with a typing speed of

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