Normal distribution table

Question

What is the time spent waiting on a kidney transplant, using the standard normal distribution table.  THe mean is 1672 and standard deviation is 209.9.  what waiting time represents the 85%

 

Answer 1

It would be desirable to define the units of waiting time.  Days?

 

the z value associated with probability 0.85 is about 1.036.

 

Use the formula for z to calculate what the X will be:  0.85 = (x - 1672) / 209.9 

 

Solve for X