CAS EC 203 Lecture 7: Review for midterm 1
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15 Feb 2017
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Consider a population of five families with the following data representing the number of pets in each family.
Family |
Number of Pets |
||
A |
2 |
||
B |
6 |
||
C |
4 |
||
D |
3 |
||
E |
1 |
How many possible samples of size 2 can be drawn?
Write each of the possible samples and then determine the mean of each sample.
Determine the mean and the standard deviation of the population.
For the distribution of sample mean values, provide the mean and the standard error of the mean.
9.
value:
10.00 points
A population consists of the following five values: 9, 11, 12, 14, and 18. |
a. | List all samples of size 3, and compute the mean of each sample. (Round your mean value to 2 decimal places.) |
Sample | Values Sum Mean | ||
1 | (Click to select)9, 11, 129, 12, 149, 12, 189, 14, 18 | ||
2 | (Click to select)9, 11, 149, 11, 129, 11, 189, 12, 14 | ||
3 | (Click to select)9, 11, 189, 11, 129, 11, 149, 12, 14 | ||
4 | (Click to select)9, 12, 1411, 12, 149, 11, 1411, 14, 18 | ||
5 | (Click to select)9, 12, 189, 11, 129, 11, 149, 11, 18 | ||
6 | (Click to select)9, 14, 189, 11, 129, 11, 149, 11, 18 | ||
7 | (Click to select)11, 12, 149, 11, 1211, 9, 149, 11, 18 | ||
8 | (Click to select)11, 12, 1811, 12, 1411, 12, 911, 9, 12 | ||
9 | (Click to select)11, 14, 1811, 14, 1211, 9, 1411, 9, 12 | ||
10 | (Click to select)12, 14, 1812, 14, 912, 14, 1112, 9, 14 | ||
For the question above please give me the Sum , Mean for each row starting with 1 through 10. ____ ______ |
b. | Compute the mean of the distribution of sample means and the population mean. (Round your answers to 2 decimal places.) |
Sample means________ | |
Population mean_______ | |