2:7 = 4:14 because each is equal to 2/7. If you simplify 4:14 by dividing by 2, it simplifies to 2:7.
Let X be the iq score of adults. X is normally distributed with mean of 100 and standard deviation of 20.
If all iq scores are converted to z -scores then we will get z scores. And the z score is standard normal variable with mean=0 and standard deviation =1
Hence the mean and standard deviation of of all z scores will be 0 and 1 respectively.
50 + 3(B) + 50 + 3(R) + 50 + 3(Y) would be the equation.
Considering that 12 inches are in 1 foot, 179/12 = 14, remainder 11. Therefore the answer is 14 feet and 11 inches
