A normal distribution has a mean of 80 and a standard deviation of 5. Use the standard normal table to find the indicated probabitity for a randomly selected x-value from the distribution. Round z -scores to two decimal places for calculations. Round final probabitity answers to four decimal places, if needed. Find the z score for 91 P(x91)= Find the 2 score for 92 P(x92)=P(91x92)=.