Answer the following questions. (a) The random variable x is distributed normally, with x~N(80,100) Find the probability that x is greater than 90. x 90. (b) Find P(x

Question

Answer the following questions. ​(a) The random variable x is distributed​ normally, with x~N(80,100) Find the probability that x is greater than 90. x >90. ​(b) Find P(x<85). ​(c) Find P(76<x<84).

PsyDAG · Answer

Do not understand "x~N(80,100)".

Z = (score-mean)/SD

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability related to the Z scores.

Answer the following questions. ​(a) The random variable x is distributed​ normally, with x~N(80,100) Find the probability that x is greater than 90. x >90. ​(b) Find P(x<85). ​(c) Find P(76<x<84).

Answer the following questions. (a) The random variable x is distributed normally, with x~N(80,100) Find the probability that x is greater than 90. x >90. (b) Find P(x<85). (c) Find P(76<x<84).