1. Find the area under the standard normal curve to the left of z = ?1.49 and to the right of z = 1.11. Round your answe...

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Find the area under the standard normal curve

April 14, 2018

1. Find the area under the standard normal curve to the left of z = ?1.49 and to the right of z = 1.11. Round your answer to four decimal places, if necessary.

2. The time spent waiting in the line is approximately normally distributed. The mean waiting time is 5 minutes and the variance of the waiting time is 9. Find the probability that a person will wait for more than 2 minutes. Round your answer to four decimal places.

3. The weights of steers in a herd are distributed normally. The standard deviation is 300 lbs and the mean steer weight is 1100 lbs. Find the probability that the weight of a randomly selected steer is between 769 and 1580 lbs. Round your answer to four decimal places.










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