Question

Use Table A to find the value z of a standard Normal variable that satisfies each of the following conditions. Use the value of z from Table A that comes closest to satisfying the condition. In each case, sketch a standard Normal curve with your value of z marked on the axis. (a) Find the point z with 68% of the observations falling below it. Enter your answer rounded to two decimal places. (b) Find the point z with 23% of the observations falling above it. Enter your answer rounded to two decimal places. 6 8 9

Answer 1

Solution:

Given in the question

P-value = 0.68

So z value can be found from Z table which is

Z = 0.47

Solution(b)

Here given p-value = 0.77

So Z value can be found as

Z = 0.74

Normal curve sketch is