Concept explainers
a.
To explain: The mean and standard deviation of number of heads.
a.
Answer to Problem 8CRE
The mean and standard deviation are 5000 and 50 respectively.
Explanation of Solution
Given:
Number of trials (n) = 10000
Formula used:
The formula to compute the mean and standard deviation using binomial distribution is:
Calculation:
The mean and standard deviation are:
Thus, the mean and standard deviation are 5000 and 50.
b.
To explain: The reason of using normal approximation.
b.
Answer to Problem 8CRE
Explanation of Solution
Calculation:
Here,
Thus, normal approximation could be used here.
c.
To explain: If there is reason to believe that Kerrich coin was not balanced by computing probability.
c.
Answer to Problem 8CRE
No.
Explanation of Solution
Calculation:
The probability is calculated as:
Since, the probability is above 5% thus there is no reason to believe that Kerrich’s coin was not balanced by computing probability.
Chapter 6 Solutions
The Practice of Statistics for AP - 4th Edition
Additional Math Textbook Solutions
Statistics: The Art and Science of Learning from Data (4th Edition)
STATS:DATA+MODELS-W/DVD
Essentials of Statistics, Books a la Carte Edition (5th Edition)
Introductory Statistics
Elementary Statistics Using Excel (6th Edition)
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