The data resulting from the recording of the computer repair time (X) at the computer repair place has normal distribution with a mean of 45 minutes and a standard deviation of 20 minutes. If within 1 month there are 150 computers repaired, a. How many computers are repairs that take more than 1 hour? b. How many computers are repaired it takes between 40 minutes to 1,5 hours ? c. If the longest 10% of the computer repair time will be completed the next day, what is the repair time limit that causes the repair to be completed on the day next? d. If 40 samples are taken, what is the probability that the average sample is between 40 minutes to 60 minutes ? e. Computer repair can be in the form of software and or hardware repairs. If from 40 In the sample, it turns out that there are 25 computers that only need software repair. How much estimator portion of software repair only and determine the standard error.