5. Find the equation of the line through the points (-6, 12) and (-4,91

The mean of a set of data is -3.82 and its standard deviation is 2.31. find the z score for a value of 3.99.

7(x - 2) = 3(x + 4) solve the following equation. then enter your answer in the space provided using mixed number format.

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?