Studies indicate that about 10 percent of polar bears weigh more than 1,000 pounds. A biologist studying the bears thinks that p
ercent might be too high. From a random sample of polar bears, the biologist found only 8 percent of the sample weighing over 1,000 pounds. Which of the following is the most appropriate method for the biologist’s study? A one-sample z
-test for a sample proportion
A one-sample z -test for a sample proportion
A one-sample z
-test for a population proportion
A one-sample z -test for a population proportion
A one-sample z
-test for a difference in population proportions
A one-sample z -test for a difference in population proportions
A two-sample z
-test for a difference in sample proportions
A two-sample z -test for a difference in sample proportions
A two-sample z
-test for a difference in population proportions
The discontinuities are x=-4. Because it is a fraction, you cannot divide by zero so if the denominator is set to equal zero, which it will if x=-4, the function will be be undefined
