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Probability and Statistics for Engineering and Science (8th Edition) Edit editionThis problem has been solved:
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Problem 1E
Chapter
CH1
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Problem
1E
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Step-by-step solution
Step 1 of 3
(a)
No, the scores are not a sample from the existing population. Because, the sample should not draw randomly.
The relevant conceptual population here is “All statistics students who take SI program”
Step 2 of 3
(b)
The advantages of randomly dividing the students into the two groups against the student to choose the group according to their will are,
1. This eliminates the bias.
2. The groups are well representatives of the population.
3. Randomization is basis of statistical methods used in analyzing the data.
Step 3 of 3
(c)
If investigators put all students in the treatment group, then there is nothing to compare or experiment with this program. Moreover, putting all students in the treatment is not practicable all the time.
Corresponding textbook
Probability and Statistics for Engineering and Science | 8th Edition
Probability and Statistics for Engineering and Science (8th Edition) Edit edition
Chapter 1, Problem 1E is solved.
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