Solve the following problems. after 8 points are added to each score in a sample, the mean is found to be . what was the value for the original mean? after every score in a sample is multiplied by 5, the mean is found to be . what was the value for the original mean?

65

step-by-step explanation:

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.

i believe your answer is 99.7% of 7-year-old children are between 46.6 inches and 49.5 inches tall.