The Following Display from a TI-84 Plus Calculator Presents the Results

question 16

Multiple Choice

The following display from a TI-84 Plus calculator presents the results of a hypothesis test for the difference between two proportions. The sample sizes are $n _ { 1 } = 108$ and $n _ { 2 } = 75$

Is this a left-tailed test, a right-tailed test, or a two-tailed test?

• A) Right-tailed test
• B) Two-tailed test
• C) Left-tailed test

---

Definitions:

Mobile Marketing

Marketing through wireless handheld devices.

Wireless Handheld Devices

Portable electronic gadgets without the need for physical wires, used for communication, computing, and accessing information.

Cellular Telephones

Mobile phones that operate over a network of radio cells, allowing them to be used across a wide area without physical connection to a network.

Communication Process

The method by which information is transferred from a sender to a receiver with the intention of informing or inducing action.