Expedia Would Like to Test the Hypothesis That the Proportion

question 91

Multiple Choice

Expedia would like to test the hypothesis that the proportion of Southwest Airline flights that arrive on- time is less than 0.90. A random sample of 140 United Airline flights found that 119 arrived on- time. Expedia would like to set α = 0.05. Which one of the following statements is true?

• A)Because the p- value is less than α, we reject the null hypothesis and conclude that the proportion of United Airline flights that arrive on- time is less than 0.90.
• B)Because the p- value is greater than α, we reject the null hypothesis and cannot conclude that the proportion of United Airline flights that arrive on- time is less than 0.90.
• C)Because the p- value is greater than α, we fail to reject the null hypothesis and cannot conclude that the proportion of United Airline flights that arrive on- time is less than 0.90.
• D)Because the p- value is less than α, we fail to reject the null hypothesis and cannot conclude that the proportion of United Airline flights that arrive on- time is less than 0.90.

---

Definitions:

Total Product Curve

A curve that shows the relationship between the quantity of inputs used in production and the total quantity of output produced.

Marginal Revenue Product

The additional revenue produced from using one more unit of an input.

Marginal Labor Cost

The additional cost incurred by hiring one more unit of labor.

Hourly Wage

The amount of money that an employee is paid for each hour of work.