A Group of 200 Students Takes the Kaplan Course in Hopes

question 54

Multiple Choice

A group of 200 students takes the Kaplan course in hopes that it will improve their SAT scores above the national mean of 500 on the math section.The population standard deviation of the SAT is known to be 100.Use an alpha level of .05 when answering the following questions.What is the null hypothesis?

• A)H₀: ì 500
• B)H₀: ì < 500
• C)H₀: ì > 500
• D)H₀: ì = 500

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Definitions:

Projector

An optical device that projects images or videos from a computer or other media source onto a screen or surface for larger viewing.

Instructions Per Cycle (IPC)

A measure of a computer processor's efficiency, indicating the average number of instructions executed for each clock cycle.

Bus Width

The number of bits that can be transferred simultaneously over a computer's internal data bus.

Clock Speed

The speed at which a processor executes instructions, measured in GHz or MHz.