Statistics?
21. The utility bill Mike pays per month is known to be normally distributed with a mean of 250 dollars and a standard deviation of 60. The probability is 0.2 that the utility bill will be less than what amount?
21. The utility bill Mike pays per month is known to be normally distributed with a mean of 250 dollars and a standard deviation of 60. The probability is 0.2 that the utility bill will be less than what amount?