Concept explainers
(a)
To calculate the population, mean and population standard deviation.
(a)
Answer to Problem 20E
The population mean is
The value of population standard deviation is
Explanation of Solution
Given information:
Year: Winner | Age |
Formula used:
Obtain the population mean by using the formula is given below:
The formula for population standard deviation is given below.
Calculation:
Obtain the population mean by using the formula is given below:
Thus, the population mean is
Compute tile population standard deviation
Tile formula for population standard deviation is given below:
Substitute
Thus, the value of population standard deviation is
(b)
To calculate the sample space.
(b)
Answer to Problem 20E
The simple random sample of size
Explanation of Solution
Formula used:
Calculation:
The simple random sample of size
(c)
To calculate the mean and standard deviation.
(c)
Answer to Problem 20E
Explanation of Solution
Formula used:
Calculation:
Compute the sample mean
Sample |
Sample |
Sample |
Sample |
||
Compute the mean
Sample |
Sample |
|||
Mean |
Compute the standard deviation
(d)
To calculate the sample, mean for all 25 samples for size 2 and also calculate the
(d)
Answer to Problem 20E
Explanation of Solution
Formula used:
The formula for population standard deviation is given below.
Calculation:
Verify that
Hence
Find the
Thus, the standard deviation of
Hence,
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Chapter 7 Solutions
ELEMENTARY STATISTICS W/CONNECT ACCESS
- Glencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw HillBig Ideas Math A Bridge To Success Algebra 1: Stu...AlgebraISBN:9781680331141Author:HOUGHTON MIFFLIN HARCOURTPublisher:Houghton Mifflin HarcourtHolt Mcdougal Larson Pre-algebra: Student Edition...AlgebraISBN:9780547587776Author:HOLT MCDOUGALPublisher:HOLT MCDOUGAL