ms reynolds sprinkler system has 6 station that water all parts of herfront and back lawn each station runs foe an equal amount of time if it takes 56 minutes for the first 4 station to water how long does it take to water all parts of her lawn?​

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?