Concept explainers
a.
To find: The test statistic.
a.
Answer to Problem 37E
The test statistic is 1.23.
Explanation of Solution
Given:
Population proportion ( p ) = 12%
Number of students ( n ) = 100
Number of left-handed students ( x ) = 16
Formula used:
The formula to compute the test statistic is:
Calculation:
The hypotheses are:
The sample proportion is:
The test statistic is calculated as:
The test statistic is 1.23.
b.
To find: The p -value and show it in normal curve.
b.
Answer to Problem 37E
The P -value is 0.2186.
Explanation of Solution
Calculation:
The P -value for two tailed test using table is computed as:
Thus, the P - value is 0.2186.
Graph:
The figure is constructed as:
Chapter 9 Solutions
The Practice of Statistics for AP - 4th Edition
Additional Math Textbook Solutions
Elementary Statistics (13th Edition)
STATS:DATA+MODELS-W/DVD
Fundamentals of Statistics (5th Edition)
Essentials of Statistics, Books a la Carte Edition (5th Edition)
Basic Business Statistics, Student Value Edition
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