Waiting for answer This question has not been answered yet. You can hire a professional tutor to get the answer.
The length of life of an instrument produced by a machine has a normal ditribution with a mean of 12 months and standard deviation of 2 months.
The length of life of an instrument produced by a machine has a normal ditribution with a mean of 12 months and standard deviation of 2 months. Help calculate the probability that an instrument produced by this machine will last less than 7 months