Find the indicated​ z-scores shown in the attached graph.   First note that the shaded region is an area in between two​ z-scores. This means that the region is not a cumulative area from the left and to solve requires working instead with regions that are cumulative areas from the left.​    Thus, to find the​ z-scores in this​ situation, one needs to find the cumulative areas to the left of each unknown​ z-score.   While either the Standard Normal Table or technology can be used to find the corresponding​ z-score, in this​ problem, use the table.   The two values must be approached individually.​   First, consider the​ z-score for the lower 0.4649 to the left of z=0. The area to the left of this​ z-score is not given in the problem directly and must be found using the inner areas given.   Note that 0.5 of any Standard Normal Distribution lies to the left of z=0 and that each half is divided into two unequal regions by the unknown​ z-scores.   The larger region is known from the problem statement to be 0.4649 and the smaller region is the one to the left of the desired​ z-score.   If the region of this area is​ known, then the Standard Normal Table can be used to find the​ z-score.   Using the fact that 0.5 of the distribution lies to the left of z=​0, this smaller region is 0.5 − 0.4649 = _________.   Using the cumulative area from the​ left, locate the closest area in the body of the Standard Normal Table and identify the​ z-score corresponding to the lower _________.   Round the value to the nearest two decimal places.   The​ z-score for the lower 0.0351 is _________.   To find the second​ z-score, find the total cumulative area to the left of the upper​ z-score.   This is found by summing the three regions to the left of the​ z-score. The first two larger regions are given in the problem statement as 0.4649 each.   The third region was found earlier to be _________  when determining the first​ z-score.   Thus, the sum of these three regions is 0.4649 + 0.4649+ _________ = ?   ​Now, find the​ z-score corresponding to _________ in the Standard Normal Table. Round the value to the nearest two decimal places.   z≈ 1.81   ​Therefore, the​ z-scores are approximately _________  and __________???

Mathematics For Machine Technology
8th Edition
ISBN:9781337798310
Author:Peterson, John.
Publisher:Peterson, John.
Chapter84: Binary Numeration System
Section: Chapter Questions
Problem 10A: Analyze the following numbers. 0.802
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Find the indicated​ z-scores shown in the attached graph.
 
First note that the shaded region is an area in between two​ z-scores. This means that the region is not a cumulative area from the left and to solve requires working instead with regions that are cumulative areas from the left.​ 
 
Thus, to find the​ z-scores in this​ situation, one needs to find the cumulative areas to the left of each unknown​ z-score.
 
While either the Standard Normal Table or technology can be used to find the corresponding​ z-score, in this​ problem, use the table.
 
The two values must be approached individually.​
 
First, consider the​ z-score for the lower 0.4649 to the left of z=0.
The area to the left of this​ z-score is not given in the problem directly and must be found using the inner areas given.
 
Note that 0.5 of any Standard Normal Distribution lies to the left of z=0 and that each half is divided into two unequal regions by the unknown​ z-scores.
 
The larger region is known from the problem statement to be 0.4649 and the smaller region is the one to the left of the desired​ z-score.
 
If the region of this area is​ known, then the Standard Normal Table can be used to find the​ z-score.
 
Using the fact that 0.5 of the distribution lies to the left of z=​0, this smaller region is 0.5 − 0.4649 = _________.
 
Using the cumulative area from the​ left, locate the closest area in the body of the Standard Normal Table and identify the​ z-score corresponding to the lower _________.
 
Round the value to the nearest two decimal places.
 
The​ z-score for the lower 0.0351 is _________.
 
To find the second​ z-score, find the total cumulative area to the left of the upper​ z-score.
 
This is found by summing the three regions to the left of the​ z-score.
The first two larger regions are given in the problem statement as 0.4649
each.
 
The third region was found earlier to be _________  when determining the first​ z-score.
 
Thus, the sum of these three regions is 0.4649 + 0.4649+ _________ = ?
 
​Now, find the​ z-score corresponding to _________ in the Standard Normal Table. Round the value to the nearest two decimal places.
 
z≈ 1.81
 
​Therefore, the​ z-scores are approximately _________  and __________???
 
 
0.4761
0.4761
Transcribed Image Text:0.4761 0.4761
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