The time taken to calibrate an instrument to characterize

Last updated: 2/6/2023

The time taken to calibrate an instrument to characterize samples in the lab is a random variable having a norm distribution of 20 minutes and a standard deviation of 2 minutes What is the probability that an instrument can calibrated in a period of time 4 1 less than 19 5 minutes 2 2 between 20 and 22 minutes 2