Plz answer if you answer this correctly i will mark you as brainliest

Find an equation of the line perpendicular to the graph.

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

What is the difference between the predicted value and the actual value