Approximately 21,000 school psychologists are members of the U.S.-based National

Question

Approximately 21,000 school psychologists are members of the U.S.-based National Association of School Psychologists. Of these, about 5000 have doctoral degrees. A researcher wants to randomly select 100 of the doctoral-level school psychologists for a survey study regarding aspects of their jobs.

a. What is the population targeted by this study?

b. What is the sample desired by this researcher?

c. What process would the researcher use to select the sample using a random numbers table below?

d. If the researcher used the random number table below (beginning at the left-hand side of the top line and continuing with each succeeding line), who would be the first 4 participants selected for this study?

04493 52494 75246 33824 45862 51025

00549 97654 64051 88159 96119 63896

35963 15307 26898 09354 33351 35462

59808 08391 45427 26842 83609 49700

Explanation / Answer

Approximately 21,000 school psychologists are members of the U.S.-based National Association of School Psychologists. Of these, about 5000 have doctoral degrees. A researcher wants to randomly select 100 of the doctoral-level school psychologists for a survey study regarding aspects of their jobs.

5000 doctoral-level school psychologists

100 of the doctoral-level school psychologists

c. What process would the researcher use to select the sample using a random numbers table below?

Label the population from 0001 to 5000 and randomly select 100 subjects.

d. If the researcher used the random number table below (beginning at the left-hand side of the top line and continuing with each succeeding line), who would be the first 4 participants selected for this study?

04493 52494 75246 33824 45862 51025

00549 97654 64051 88159 96119 63896

35963 15307 26898 09354 33351 35462

59808 08391 45427 26842 83609 49700

Four selected are:

0449

3524

2463

3824

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