Is 2. The following data set represents the
height in inches of people in line to ride a
roller coaster.
48.5, 36, 42, 37.5, 50.2, 42.6
Sum:
Mean:

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.

One statement could be 12/4=3