Questions 6 to 11: Finding percentiles for Z~N(0;1). Question 6: Find the z-value that has an area under the Z-curve of 0.1292 to its left. Question 7: Find the z-value that has an area under the Z-curve of 0.65 to its left. Question 8: Find the z-value such that the area under the Z-curve to its right is 0.019. Question 9: Find the z-value such that the area under the Z-curve to its right is 0.99. Question 10: Find the positive a-value such that the area under the standard normal curve between 0 and z is 0.2642. Question 11: Find the value c, c:0, such that the area under the standard normal curve between c and -c is 0.9164