Finding area under standard normal curve

Question

ind the area under the standard normal curve between z=-0.88 and z=-0.78 . Round your answer to four decimal places, if necessary.

Answer 1

For this problem, you need a Z table for areas of a standard normal distribution. If your table positive and negative values for Z, you do the following.

Find the area to the left of Z = -0.78 on the table give going down to to -0.7 on the far left and over to .08 which gives the area for Z = -0.78. That value is .2177, Use the same method for Z = -0.88 and you will see that it is .1894. Now subtract the values.. .2177 - .1894 = .0283.