A researcher wants to determine the total number black bears found at Yellowston

Question

A researcher wants to determine the total number black bears found at Yellowstone National Park. To determine this, Yellow Stone National Park is divided into four regions and each region is divided into 100 plots. For each region, a random sample of 10 plots is taken and the number of black bears on those plots is counted.

1. The unit in this study is

A.a black bear at Yellow Stone National Park.

B.a plot at Yellow Stone National Park.

C.a region at Yellow Stone National Park.

D.the number of black bears found at Yellow Stone National Park.

2. The sample for this study is

A.the four regions.

B.the 40 randomly selected plots.

C.all the black bears found on the randomly selected plots

D.the 10 randomly selected plots.

3. The sampling design used for this study is a

A.stratified random sample.

B.simple random sample.

C.voluntary response sample.

D.cluster sample.

4. It is very difficult to count the number of bears on a plot without making a mistake, consequently, this study will have

A.response bias.

B.undercoverage bias.

C.non-response bias.

5. When listing all the plots to sample from, several plots from one region where not included on the list. This study may have

A.response bias.

B.undercoverage bias.

C.non-response bias

Explanation / Answer

1.A) a blach beer at Yellow Stone National Park

2.B)the 40 randomly selected plots.

3.A)Straatified Random Sampling

4.B)undercoverage bias

5.B)undercoverage bias

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