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Statistics Help

**Question: **1. Clients arriving at a free income-tax preparation service check in with a receptionist who collects basic information about them. Whenever a client has a February or an August birthday, the next client to check in is included in the sample. Is this...

a. "Random sampling from a process"?

b. "Stratified random sampling"?

c. "Systematic sampling"?

d. "Cluster sampling"?

2. In a nationwide study of cell phone usage by incoming college freshmen, 30 colleges are randomly selected. Every incoming freshman at the 30 colleges completes a survey on cell phone usage. Is this...

a. "Random sampling from a process"?

b. "Stratified random sampling"?

c. "Systematic sampling"?

d. "Cluster sampling"?

3. An economist is selected at random from the first 1,000 economists listed in an online directory of members of the American Economic Association. Every 1,000th economist thereafter is included in the sample. Is this...

a. "Random sampling from a process"?

b. "Stratified random sampling"?

c. "Systematic sampling"?

d. "Cluster sampling"?

4. The methodology for the Kauffman Firm Survey is to divide new business into six groups" high-tech, female-owned; high-tech, male-owned; medium-tech, female-owned; medium-tech, male-owned; low-tech, female-owned; and low-tech, male-owned. A simple random sample is taken from each group, and data are collected on each new business in the sample. Is this...

a. "Random sampling from a process"?

b. "Stratified random sampling"?

c. "Systematic sampling"?

d. "Cluster sampling"? Edit

**Answer: **2. d. "Cluster sampling"

3. a. "Random sampling from a process" Edit

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