P peanut111 New member Joined Jul 17, 2010 Messages 3 Jul 17, 2010 #1 If z is a standard normal random variable and A is a positive number then P(z<-A)=P(z>A). Is this true or false and why?
If z is a standard normal random variable and A is a positive number then P(z<-A)=P(z>A). Is this true or false and why?
D Deleted member 4993 Guest Jul 17, 2010 #2 peanut111 said: If z is a standard normal random variable and A is a positive number then P(z<-A)=P(z>A). Is this true or false and why? Click to expand... Please share your work/thoughts with us, indicating exactly where you are stuck - so that we may know where to begin to help you.
peanut111 said: If z is a standard normal random variable and A is a positive number then P(z<-A)=P(z>A). Is this true or false and why? Click to expand... Please share your work/thoughts with us, indicating exactly where you are stuck - so that we may know where to begin to help you.
P peanut111 New member Joined Jul 17, 2010 Messages 3 Jul 17, 2010 #3 i'm having trouble understanding if it'd be true or false. If it's posible (true) I'd love an example to compare it to.
i'm having trouble understanding if it'd be true or false. If it's posible (true) I'd love an example to compare it to.
D Deleted member 4993 Guest Jul 18, 2010 #4 Let us start from the begining then: what does P(z < -A) and P(z > A) mean to you? - in plain layman's words... what do you understand that those expressions are telling you?
Let us start from the begining then: what does P(z < -A) and P(z > A) mean to you? - in plain layman's words... what do you understand that those expressions are telling you?
