A Confidence Interval Was Used to Estimate the Proportion of Statistics

question 54

Multiple Choice

A confidence interval was used to estimate the proportion of statistics students who are female. A random sample of 72 statistics students generated the following 90% confidence interval: (.438, .642) . Based on the interval, is the population proportion of females equal to 59%?

• A) Maybe. 59% is a believable value of the population proportion based on the information above.
• B) No, and we are 90% sure of it.
• C) Yes, and we are 90% sure of it.
• D) No, the proportion is 54%.

---

Definitions:

Variable Costs

Expenses that vary in direct proportion to the level of production or sales volume, such as materials and labor.

Quantity Produced

Indicates the total amount of goods or services produced by a company during a specific period.

Cross-Price Elasticity

A measure of the responsiveness in the quantity demanded of one good due to a price change in another good.

Break-Even Point

The point at which total costs and total revenue are equal, meaning that there is no net loss or gain, and one has "broken even."