Scandinavian researchers investigated the effects of hunting male bears on succeeding generations. (The effects of hunting females on successive generations are well documented.) They hypothesized that when a male is killed a new male will move in, and maximize his reproductive success by killing existing cubs (so that the females will conceive sooner.) A random sample of radio tagged females was monitored and data on the number of bear cubs surviving 1.5 years were gathered. In the southern area, hunters killed bears legally; in the northern area, no hunting took place. The data on cub survival in this sample are reproduced below. The researcher suspects an association between the location of the females and cub survival. a) What is the appropriate null hypothesis for this investigation? (You may state this hypothesis in ordinary English if you wish.)
b) Using the hypothesis from part (a), test the null hypothesis using the appropriate chi-square procedure.

Question

Scandinavian researchers investigated the effects of hunting male bears on succeeding generations. (The effects of hunting females on successive generations are well documented.) They hypothesized that when a male is killed a new male will move in, and maximize his reproductive success by killing existing cubs (so that the females will conceive sooner.) A random sample of radio tagged females was monitored and data on the number of bear cubs surviving 1.5 years were gathered. In the southern area, hunters killed bears legally; in the northern area, no hunting took place. The data on cub survival in this sample are reproduced below. The researcher suspects an association between the location of the females and cub survival.  ​ a) What is the appropriate null hypothesis for this investigation? (You may state this hypothesis in ordinary English if you wish.) 
b) Using the hypothesis from part (a), test the null hypothesis using the appropriate chi-square procedure.

Quizplus · Accepted Answer

The Answer of Scandinavian researchers investigated the effects of hunting male bears on succeeding generations. (The effects of hunting females on successive generations are well documented.) They hypothesized that when a male is killed a new male will move in, and maximize his reproductive success by killing existing cubs (so that the females will conceive sooner.) A random sample of radio tagged females was monitored and data on the number of bear cubs surviving 1.5 years were gathered. In the southern area, hunters killed bears legally; in the northern area, no hunting took place. The data on cub survival in this sample are reproduced below. The researcher suspects an association between the location of the females and cub survival.  ​ a) What is the appropriate null hypothesis for this investigation? (You may state this hypothesis in ordinary English if you wish.) 
b) Using the hypothesis from part (a), test the null hypothesis using the appropriate chi-square procedure.

Scandinavian Researchers Investigated the Effects of Hunting Male Bears on Succeeding