Question 1191096: For a standard normal distribution ( μ=0 and σ=1), find c given P(Z > c) = 0.247,
please show your answer to 2 decimal places.
c =
Answer by ikleyn(52879)   (Show Source):
You can put this solution on YOUR website! .
For a standard normal distribution ( μ=0 and σ=1), find c given P(Z > c) = 0.247,
please show your answer to 2 decimal places.
c =
~~~~~~~~~~~~~~~~
The standard normal distribution is described by the standard bell shaped curve.
You are given the area value of 0.247 under this curve, and they want you find the value of "c" such
that the area under the curve on the right of this value be 0.247.
Use the online "inverse normal distribution calculator" at web-site
https://onlinestatbook.com/2/calculators/inverse_normal_dist.html
It has clear design and instructions, as well as intuitively clear visual interface,
which prevents you of making errors.
Your options are mean= 0, sd = 1, area= 0.247, "above".
The calculator gives the answer c= 0.684.
You may round it to c= 0.68, as requested.
Alternatively, you can use the pocket calculator to do this job.
On how to use it, see this video-lesson
https://www.youtube.com/watch?v=RPzxs-Hd8s0
Or you can do it manually, using the Table Values Representing AREA to the LEFT of the Z-score
https://www.math.arizona.edu/~rsims/ma464/standardnormaltable.pdf
On how to do it, see this Internet text source
http://statisticshelper.com/how-to-use-the-z-table
------------
Solved.
|
|
|
