Concept explainers
Explain whether the conditions to construct the confidence interval is satisfied or not.
Answer to Problem 28E
All three conditions for confidence interval is satisfied.
Explanation of Solution
Given Information:
Population size = 2400
Number of sample = 50
Number of Success = 38
To calculate a confidence interval three conditions should be satisfied. Conditions are Random, Independent and Normal.
The condition of random is satisfied since the sample was taken atrandomly from the students of the college.
Since the
In the survey the number of success is 38 and failure is 12. Since both the success and failure are greater than 10. Thus, condition for normal is satisfied.
Hence, all three conditions for confidence interval is satisfied.
Chapter 8 Solutions
The Practice of Statistics for AP - 4th Edition
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