Example 4: The percentage of physicians who are women is 27.9%. In a survey of physicians employed by a large university health system, 45 of 120 randomly selected physicians were women. Use the P- value approach to determine whether there is sufficient evidence at the 0.05 level of significance to conclude that the proportion of women physicians at the university health system exceeds 27.9%? n = 120, x = 45, a = 0.05 (a) Setup : P= : p (right-tailed test) (b) Standardize the sample data 2 = = (e) Use TI-84 to find the P- value. (d) Draw the Z - distribution and shade the area that represents a and the P- value respectively. = 2.344 (e) What conclusion can be drawn