6 Suppose X" M(59, 4). Write the Excel function to find the X values associated with the following percentages: a. Highest 21 percent 5 points O=NORM.INV(79,59,4) O=NORM.INV(0.79,59,4) eBook O=NORMS.INV(0.79,59.4) Ask b. Middle 56 percent Print O Xupper =NORMS.INV(0.79,59.4). Xlower =NORMS.INV(0.22,59,4) References O Xupper =NORM.INV(0.22,59,4), Xlower =NORM.INV(0.79,59,4) O Xupper =NORM.INV(0.78,59,4), Xlower =NORM.INV(0.22,59,4) c. Lowest 23 percent O=NORMS.INV(0.23,59,4) O=NORM.INV(0.23,59,4) O=NORM.INV(0.77,59,4)