Question

Find the probability of selecting a z score greater than –0.95.

A.
0.1711

B.
0.8289

C.
0.5199

D.
1.6450

Answer 1

We have been given a z-score
`-0.95`. We are asked to find the probability of selecting a z score greater than
`-0.95`.

We know that normal distribution curve represents area under a z-score. To find the probability of selecting a z-score greater than
`-0.95`, we will use following formula.

`P(z>a)=1-P(z<a)`

`P(z>-0.95)=1-P(z<-0.95)`

Using normal distribution table, we will find probability of z-score less than
`-0.95`.

`P(z>-0.95)=1-0.17106`

`P(z>-0.95)=0.82894`

Therefore, probability of a z-score greater than
`-0.95` is 0.8289 and option B is the correct choice.

Answer 2

To obtain the probability that z>-0.95, we shall have:
P(z>-0.95)
=1-P(z<-0.95)
=1-0.1711
=0.8289

Answer:
B.
0.8289