You are conducting a study to see if the proportion of women over 40 who regularly have mammograms is significantly less than 0.12. With H1 : p << 0.12 you obtain a test statistic of z=−1.768 z=-1.768. Use a normal distribution calculator and the test statistic to find the P-value accurate to 4 decimal places. It may be left-tailed, right-tailed, or 2-tailed. P-value =