Avan'able is normally distributed with mean '12 and standard deviation 2. a. Find the percentage of all possible values of the variable that lie between 9 and 13-. b. Find the percentage of all possible values of the variable that exceed 7. c. Find the percentage of all possible values of the variable that are less than 11, Click here to view page 1 of the standard normal table. _.__~_,___ C lick here to view page 2 of the standard normal table. ~_ is a. The percentage of all possible values of the variable that lie between 9 and '13 is EM. (Round to two decimal places as needed.)