The health of the bear population in Yellowstone National Park is monitored by periodic measurements taken from anesthetized bears. A sample of 54 bears has a mean weight of 195 lbs. Assuming that o...

The health of the bear population in Yellowstone National Park is monitored by periodic measurements taken from anesthetized bears. A sample of 54 bears has a mean weight of 195 lbs. Assuming that o is known to be 130 lbs, use a 0.05 significance level to test the claim that the population mean of all such bears weights is greater than 160.