Concept explainers
a.
To find: The
a.
Answer to Problem 55E
The probability is 0.1587.
Explanation of Solution
Given:
Formula used:
The formula to compute the z -score is:
Where,
x is raw score
µ is population mean
s is population standard deviation.
Calculation:
Consider, X be the random variable that shows the amount of cola in plastic bottles follows the
The probability that an individual bottle would contain less than 295 ml cola can be computed as:
Thus, the required probability is 0.1587.
b.
To find: The probability that mean content in randomly chosen 6 bottles is below 295 ml.
b.
Answer to Problem 55E
The probability is 0.0071.
Explanation of Solution
Given:
Sample size ( n ) = 6
Calculation:
The probability that mean content in randomly chosen 6 bottles is less than 295 ml is calculated as follows:
Thus, the required probability is 0.0071.
Chapter 7 Solutions
The Practice of Statistics for AP - 4th Edition
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Elementary Statistics
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