One Method for Estimating Abundance of Animals Is Known as Line-Intercept

question 30

Essay

One method for estimating abundance of animals is known as line-intercept sampling. The theory of this method, when applied to Alaskan wolverines, predicts that p = 0.453 of attempts to locate wolverine tracks should be successful. Suppose that biologists will make 100 attempts to locate wolverine tracks in random locations in Alaska.
a)Show that this sample size is large enough to justify using the normal approximation to the sampling distribution of .
b)What is the mean of the sampling distribution of ?
c)What is the standard deviation of the sampling distribution of ?
d)What is the probability that a sample proportion, , would differ from p = 0.453 by as much as 0.05?

---

Definitions:

Variable Costs

Costs that fluctuate in direct relation to production levels or sales figures.

Fixed Costs

Costs that do not vary with the level of production or sales, remaining constant regardless of business activity.

Sales Revenue

The total amount earned from the sale of goods or services before any costs or expenses are deducted.

Direct Materials

Raw materials that are directly traceable to the manufacturing of a product and can be easily quantified and allocated to that product.