- This topic has 1 reply, 1 voice, and was last updated 3 years ago by .

Viewing 2 posts - 1 through 2 (of 2 total)

Viewing 2 posts - 1 through 2 (of 2 total)

- You must be logged in to reply to this topic.

Home › Forums › Math › For a standard normal distribution, which of the following expressions must always be equal to 1?

Tagged: equal to 1, Standard Normal Distribution

- This topic has 1 reply, 1 voice, and was last updated 3 years ago by shilpav.

Viewing 2 posts - 1 through 2 (of 2 total)

- AuthorPosts
- July 19, 2021 at 7:19 pm #10305
A. P(z>-a) – P(-a<z<a) + P(Z>a)

B. P(z<-a) + P(-a<z<a) + P(Z<a)

C. P(z<-a) – P(-a<z<a) – P(Z>a)

D. P(z<-a) + P(-a<z<a) + P(Z>a)- This topic was modified 3 years ago by shilpav.
- This topic was modified 3 years ago by ProtonsTalk.
- This topic was modified 3 years ago by ProtonsTalk.

July 19, 2021 at 7:24 pm #10312::The correct answer is

**D. P(z<-a) + P(-a<z<a) + P(Z>a)****Explanation:**

This expression represents all of the possible values in a curve, or in other words, the total area of a curve. According to a standard normal distribution, the total area of a curve is always equal to 1 as it is a probabilistic distribution.- This reply was modified 3 years ago by ProtonsTalk.
- This reply was modified 3 years ago by ProtonsTalk.

- AuthorPosts

Viewing 2 posts - 1 through 2 (of 2 total)

- You must be logged in to reply to this topic.

Scroll to Top

Scroll to Top