The Amount of Time Required for an Oil and Filter

question 7

Short Answer

The amount of time required for an oil and filter change on an automobile is normally distributed with a mean of 45 minutes and a standard deviation of 10 minutes.A random sample of 16 cars is selected.90% of the sample means will be greater than what value?

---

Definitions:

MC (Marginal Cost)

The rise in overall expenses associated with the production of an extra unit of a product or service.

Break-Even Point

The level of production or sales at which total revenues equal total costs, resulting in no profit or loss.

Shutdown Point

The shutdown point is the level of output and price at which a business covers its variable costs; operating below this point would lead the firm to losses greater than its fixed costs.

AVC (Average Variable Cost)

The cost of labor, materials, and other variable inputs divided by the quantity of output produced.