Given That the Random Variable X Is Normally Distributed with a Mean

question 75

Multiple Choice

Given that the random variable X is normally distributed with a mean of 80 and a standard deviation of 10,P(85 X 90) is

• A)0.5328
• B)0.3413
• C)0.1915
• D)0.1498

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Definitions:

Alternate-form Reliability

A measure of consistency where two versions of a test that are considered equivalent are given to the same participants at different times to assess consistency of scores.

Internal Consistency

A measure used to evaluate the reliability of a test or scale, indicating how well the various items assess the same characteristic.

Split-half Reliability

A measure of consistency where a test is divided into two parts and the scores from each half are compared to assess the test's reliability.

Coefficient Alpha

A statistic that is used to measure the internal consistency or reliability of a psychometric instrument.