1. Statistics
2. Data Collection
3. Designing Studies
4. Sample Size Determination
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Assume the following data represent a population of 50 values. Values equal
to 1 indicate that a particular attribute is present, a value equal to 0 indicates the attribute is not present.
1 1 1 1 1 1 1 1 0 0
0 1 1 0 0 1 1 1 0 1
0 1 1 1 1 1 1 1 1 0
1 1 1 1 1 1 1 0 1 1
0 1 1 1 1 1 1 1 1 1
a. How would you compute the population proportion.
b. A random sample of 15 items produced the following numbers: 1 1 1 0 0 1 0 0 1 1 0 0 0 1 0. How would you Compute the sample proportion and the sampling error present in your sample.
c. What is the range of extreme sampling error for a sample of 15 taken from this population?
d. How would the range of extreme sampling error change if the sample size was set to 30? Discuss the advantages of having a larger sample size.