Concept explainers
(a)
To find: the
(a)
Answer to Problem 75E
Explanation of Solution
Given:
Random sample varies normal around the target mean
Formula used:
Rule of Multiplication:
Rule of Complement
Calculation:
The 68-95-99.7-rule informs us that 95% of the mean of the sample is within
P (within
P (greater than
Rule of Multiplication:
Suppose that X is the number of samples, which implies that the mean is more than
Rule of Complement
It could then determine the chances of having more than
(b)
To find: the probability that the mean of the 1st sample is greater than
(b)
Answer to Problem 75E
Explanation of Solution
Given:
Random sample varies normal around the target mean
Formula used:
Multiplication rule:
Calculation:
The 68-95-99.7-rule informs us that 95% of the mean of the sample is within
Multiplication rule:
If the 4th sample is the 1st sample with a mean larger than
Then the 3 previous samples have a mean less than
(c)
To explain: they will assume that it is not working in the process. That this is a reasonable criterion justifies the response with a sufficient probability.
(c)
Answer to Problem 75E
Reasonable criterion
Explanation of Solution
Given:
Random sample varies normal around the target mean
Formula used:
Multiplication rule:
Calculation:
The 68-95-99.7-rule informs us that 95% of the mean of the sample is within
Multiplication rule:
Suppose X is the number of samples means in
Add the associating probability
Since the probability is below 5 percent, it is unlikely that this occurrence will happen by chance and this is thus a reasonable criterion.
Chapter 10 Solutions
The Practice of Statistics for AP - 4th Edition
Additional Math Textbook Solutions
Statistics: The Art and Science of Learning from Data (4th Edition)
Introductory Statistics (2nd Edition)
Intro Stats, Books a la Carte Edition (5th Edition)
Elementary Statistics Using Excel (6th Edition)
Essentials of Statistics, Books a la Carte Edition (5th Edition)
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