(a)
To find:
The two sample
(a)
Answer to Problem 18.31E
Explanation of Solution
Given:
Group | |||
Tongue piercing | |||
No Tongue piercing |
Concept used:
Formula
Standard error
Degree of freedom
Significance level
Calculation:
Standard error
Degree of freedom
The
(b)
To explain:
The tongue piercing causes more enamel cracks of the given sample.
(b)
Explanation of Solution
Given:
Group | |||
Tongue piercing | |||
No Tongue piercing |
Concept used:
Formula
Standard error
Degree of freedom
Significance level
Calculation:
Standard error
Degree of freedom
The
So the null hypothesis are rejected
The claim that tongue piercing causes more enamel cracks.
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Chapter 18 Solutions
Practice of Statistics in the Life Sciences
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