Concept explainers
The correct answer about the interval in which 95% of the observations should occur from the options (a) 16.05 to 16.14 ounces, (b)
Answer to Problem 9PT
The correct answer is (e).
Explanation of Solution
Given information:
Amount of bottles of shampoo to fill the machine = 16 ounces
Mean amount of shampoo = 16.05 ounces
Standard deviation = 0.1 ounce
Number of randomly selected bottles = 4
Consider that
In case of a Normal distribution, it is know that 95% of the observations lie within 2 standard deviations of the mean. But it is not given that the population distribution is normal so the central limit theorem cannot be applied.
Hence, the correct answer is (e).
Chapter 7 Solutions
The Practice of Statistics for AP - 4th Edition
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Fundamentals of Statistics (5th Edition)
Basic Business Statistics, Student Value Edition (13th Edition)
Introductory Statistics (10th Edition)
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