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Chapter 2: Q. 2.3 (page 119)

Use Table A in the back of the book to find the proportion of observations from a standard Normal distribution that fall in each of the following regions. In each case, sketch a standard Normal curve and shade the area representing the region.

3.−0.56<z<1.81

Short Answer

Expert verified

The standard Normal curve, with the region represented by the area, is as follows:

Step by step solution

01

Given Information   

Z-score :−0.56<z<1.81

02

Explanation   

From table A,

p(−0.56<z<1.81)=p(z<1.81)−p(<−0.56)=p(z<1.81)−[1−p(z<0.56)]=0.9649−[1−0.7123]=0.9648−0.2877=0.6771

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