A Study Was Recently Conducted at a Major University to Determine

question 97

Multiple Choice

A study was recently conducted at a major university to determine whether there is a difference in the proportion of business school graduates who go on to graduate school within five years after graduation and the proportion of non-business school graduates who attend graduate school. A random sample of 400 business school graduates showed that 75 had gone to graduate school while in a random sample of 500 non-business graduates, 137 had gone on to graduate school. Based on these sample data, and testing at the 0.10 level of significance, what is the value of the test statistic?

• A) Approximately z = 1.645
• B) About z = -3.04
• C) Approximately z = 3.45
• D) About z = 1.96

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Definitions:

Electrical Supply

The provision of electrical power to a device or system, which can be AC (Alternating Current) or DC (Direct Current) sourced from the grid, batteries, or generators.

Thermostat

Any of a number of different types of heat sensing switches; a thermostat usually changes the status of a circuit or system when a specific temperature value is achieved. Found on starters and other electrical components, also used in an engine cooling system where it is used to option coolant circulation to the radiator.

Governor Cutout

A mechanism or setting in engines and machinery that limits the maximum speed or output to prevent damage or conserve energy.