Question

Find z so that 88% of the area is to the right of z.

Answer 1

• We are required to find Z so that the area is to the right, this means that the area is to be positive .

,

• 88 % can be converted to 88/100 = 0.88

,

• z = 1-0.88 = 0.12

The value tha corresponds with 0.12 = 0.04775

= 0.048

using the cumulative standard normal z score of 0.12 = 0.5478