Table A practice, I

(a) z is less than 20.37

(b) z is greater than 20.37

(c) z is less than 2.15

(d) z is greater than 2.15 For Exercises 3.27 to 3.30, use Table A to fi nd the proportion of observations from the standard Normal distribution that satisfi es each of the following statements.
In each case, sketch a standard Normal curve and shade the area under the curve that is the answer to the question. Use the Normal Curve applet to check your answers.