Concept explainers
(a)
Whether the 10% condition is met or not.
(a)
Answer to Problem 31E
The 10% condition is not met.
Explanation of Solution
Given information:
Number of passengers in the flight = 76
Number of passengers in the first class = 12
Number of passengers in the coach class = 64
Number of passengers for SRS = 10
Given the population size is 76.
Here, the
Hence, the 10% condition is not met.
(b)
Whether the Normal condition is met or not.
(b)
Answer to Problem 31E
The Normal condition has not been met.
Explanation of Solution
Given information:
Number of passengers in the flight = 76
Number of passengers in the first class = 12
Number of passengers in the coach class = 64
Number of passengers for SRS = 10
Formula used:
When the product of sample size and the sampling proportion that is,
Consider that the sample distribution be p and sample size for SRS be n.
Find the population proportion by dividing the number successes by the sample size that is,
Substitute 12 for x and 76 for n in the above expression.
Know that the product of sample size and the sampling proportion that is,
Substitute
Again, substitute
It is seen that both
Hence, the Normal condition has not been met.
Chapter 7 Solutions
The Practice of Statistics for AP - 4th Edition
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Basic Business Statistics, Student Value Edition (13th Edition)
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