A variable is normally distributed with mean 12 and standard deviation 4 a. Find the percentage of all possible values of the variable that lie between 8 and 17. b. Find the percentage of all possible values of the variable that exceed 10. C. Find the percentage of all possible values of the variable that are less than 9. Click here to view page 1 of the standard normal table. Click here to view page 2 of the standard normal table. a. The percentage of all possible values of the variable that lie between 8 and 17