Hypergeometric sampling without replacement

STA 112. Practice questions, not past papers.

Lessons

• Select from a finite population
• Moments and finite population adjustment

Practice questions

1. Which model counts successes in a fixed-size SRS without replacement?

   Statistics study edition practice item Q164; Source: T87-89

2. In a hypergeometric model, what does K denote?

   Statistics study edition practice item Q165; Source: T87-89

3. Which factor reduces hypergeometric variance relative to np(1-p)?

   Statistics study edition practice item Q166; Source: T87-89

4. If the entire finite population is sampled, the success-count variance is what?

   Statistics study edition practice item Q167; Source: T87-89

5. An SRS of 10 is drawn without replacement from 50 units, of which 4 are successes. Find P(exactly 2 successes). Give the value to 4 decimal places.

   Statistics study edition practice item Q168; Source: T87-89

6. An SRS of 4 is drawn without replacement from 20 units, of which 5 are successes. Find P(exactly 1 successes). Give the value to 4 decimal places.

   Statistics study edition practice item Q169; Source: T87-89

7. An SRS of 3 is drawn without replacement from 12 units, of which 4 are successes. Find P(exactly 2 successes). Give the value to 4 decimal places.

   Statistics study edition practice item Q170; Source: T87-89

8. A finite-population count sampled without replacement has a _____ distribution.

   Statistics study edition practice item F054; Source: T87-89

9. When all population units are sampled, count variance is _____.

   Statistics study edition practice item F055; Source: T87-89

Topic gap report