
(a)
To graph: The normal curve.
(a)

Explanation of Solution
Graph: The normal curve can be obtained by using the Minitab software. Follow the steps given below:
Step 1: Enter the data in the Minitab worksheet.
Step 2: Go to Graph and then select the option ‘probability distribution plot.’ Then, select View single. Click on Ok.
Step 3: Enter the value of 288 in
The normal curve can be obtained as:
(b)
To find: The table for values of scores corresponds to the standard deviation from the mean.
(b)

Answer to Problem 113E
Solution: The table can be shown below:
Lower limit |
Upper limit |
|
Explanation of Solution
Calculation: The table corresponding to values of scores for the standard deviation deviating from mean can be seen as below:
Lower limit |
Upper limit |
|
To graph: The sketch for the points calculated above.

Explanation of Solution
Graph: The sketch of these points can be made using the
(c)
To find: The
(c)

Answer to Problem 113E
Solution: The range of reading scores are
Explanation of Solution
Calculation: The
With the given values of mean and standard deviation, the range of reading score value for the students can be obtained by the steps below:
Step 1: For calculating 68% of data,
Step 2: For calculating 95% of data,
Step 3: For calculating 99.7% of data,
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Chapter 1 Solutions
Introduction to the Practice of Statistics: w/CrunchIt/EESEE Access Card
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