Please help me with this stats/algebra question...if you won't give the answer, tell me how I do this, please.

Question

If z scores are calculated z=(x-x bar) / standard deviation..

What is the corresponding x if the mean (x bar) is 200, the standard deviation is 20, & z = 1.5.

Answer 1

this looks like a purely algebra question (although it is a statistics based equation)

z=(x-xbar)/standard deviation

just fill in the numbers you know

1.5=(x-200)/20

now its just plain ole solve for x

start by multiplying both sides by 20 giving:

30=x-200

then add 200 to both sides and you get:

230=x

if I understand the question, then were done

hooray

good luck
keep at it