The mound of time for work out an athlete uses a stair climber or normally distributed with a mean of 20 minutes any standard deviation of five minutes find the probability that a randomly selected athlete uses a stair climber for (a) less than 17 minutes, (b) between 20 and 29 minutes and (c) more than 30 minutes.

a) The probability that a randomly selected athlete uses a stair climber for less than 70 minutes is? _____

b) The probability that a randomly selected athlete usually stair climber between 20 and 29 minutes is ? _____

c) The probability that a run at least like to at least go to the stair climber for more than 30 minutes is ? _____

This Quiz: 10 pts possible Question Help The amounts of time per workout an athlete uses a stairclimber are normally distributed, with a mean of 20 minutes and a standard deviation of 5 minutes. Find the probability that a randomly selected athlete uses a stairclimber for (a) less than 17 minutes, (b) between 20 and 29 minutes, and (c) more than 30 minutes. (a) The probability that a randomly selected athlete uses a stairclimber for less than 17 minutes is. (Round to four decimal places as needed. (b) The probability that a randomly selected athlete uses a stairclimber between 20 and 29 minutes is. (Round to four decimal places as needed.) (c) The probability that a randomly selected athlete uses a stairclimber for more than 30 minutes is. (Round to four decimal places as needed.) Question Help The amounts of time per workout an athlete uses a stairclimber are normally distributed, with a mean of 20 minutes and a standard deviation of 5 minutes. Find the probability that a randomly selected athlete uses a stairclimber for (a) less than 17 minutes, (b) between 20 and 29 minutes, and (c) more than 30 minutes. (a) The probability that a randomly selected athlete uses a stairclimber for less than 17 minutes is]. (Round to four decimal places as needed.) (b) The probability that a randomly selected athlete uses a stairclimber between 20 and 29 minutes is (Round to four decimal places as needed.) (c) The probability that a randomly selected athlete uses a stairclimber for more than 30 minutes is]. (Round to four decimal places as needed.)