For a Study Using a T Test for Independent Means

question 46

Multiple Choice

For a study using a t test for independent means, the approximate number of participants needed for 80% power for an estimated small effect size and using a one-tailed test is:

• A)50
• B)64
• C)310
• D)393

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Definitions:

High Jump

An athletic event where competitors aim to leap over a horizontally placed bar at various heights without dislodging it.

Year

A period of approximately 365.25 days, representing the time taken for the Earth to orbit the sun.

Men's High Jump

An athletic event where male competitors aim to jump over the highest possible horizontal bar without dislodging it.

Inches

A unit of length in the imperial and United States customary systems, equal to 1/12 of a foot or 2.54 centimeters.