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To find: the mean refractory period of 4 rats poisoned with DDT is 1.75 ms. Is each of the boldface numbers a parameter or a statistic?
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Answer to Problem 13.1AYK
Hence, 1.75 is statistics.
Explanation of Solution
Given: Mean refractory period in a healthy rat is 1.3 milliseconds (ms) and the mean refractory period of 4 rats poisoned with DDT is 1.75milliseconds (ms).
Calculation:
A parameter is a number that describes the population. The exact value population cannot be determined as it is large.
So in problem it is given that the mean refractory period in a health rat is 1.3millisecond
So here 1.3 is a parameter.
Statistics is a number that can be computed from sample data without making use any unknown Parameter.
In other part of the problem the mean refractory period of 4 rats poisoned with DDT is 1.75 given.
Hence, 1.75 is statistics.
Conclusion:
Hence, 1.75 is statistics.
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Chapter 13 Solutions
Practice of Statistics in the Life Sciences
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