A Contrast Expresses an Effect in the Population as a Combination

question 63

Multiple Choice

A contrast expresses an effect in the population as a combination of population means,of the form .The contrast can be estimated or tested using the sample data.Which of the following statements about or properties of contrasts is/are FALSE?

• A)The corresponding sample contrast is .
• B)The coefficients of the contrast must sum to one, .
• C)The standard error of a sample contrast is given by .
• D)To test the hypothesis that the population contrast = 0,the test statistic is ,which follows the t distribution with DFE associated with From the ANOVA.
• E)The confidence interval for Takes the form ,where Is the appropriate value of the t(DF
• E)distribution.

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Definitions:

Strabismus

A visual disorder where the eyes do not properly align with each other when looking at an object, causing a discrepancy in gaze direction.

Hypotonic Muscles

Refers to muscles that have lesser than normal tone or tension, often resulting in weakness and a reduced ability to contract.

Range of Motion

The full movement potential of a joint, usually its range of flexion and extension; an indicator of joint health.