1. Researchers, hoping to determine the percentage of Florida dentists who accep

Question

1. Researchers, hoping to determine the percentage of Florida dentists who accept Medicaid patients, call the offices of every 10th dentist starting from a randomly selected dentist from the local Yellow Page (phonebook) listings.

Identify the following:

The population?

The population parameter of interest?

Identify the sampling method?

2. A pharmaceutical company wanted to test the effectiveness of a new allergy drug. The company identified 240 adults who suffer from severe allergies. The subjects were randomly assigned to two groups. One group was given the new allergy drug and the other group was given a placebo. After 6 months, the pharmaceutical company compared the average numbers of allergy attacks among the different treatment groups.

Identify the number of factors in the experiment and the number of levels of each factor?

3. Identify the experimental design.

Explanation / Answer

1. Since data is randomly selected, grouped into lists of 10 and an interval of 10 was chosen, this is a

Systematic sampling.

2. Each group forms a factor and the drug a level. The correct answer is:

2 factors with 1 level for each factor.

3. The experimental design is Randomized Block Design.

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