A Random Sample of 30 Executives from Companies with Assets

question 70

Multiple Choice

A random sample of 30 executives from companies with assets over $1 million was selected and
Asked for their annual income and level of education. The ANOVA comparing the average income
Among three levels of education rejected the null hypothesis. The Mean Square Error (MSE) was
243) 7. The following table summarized the results:
When comparing the mean annual incomes for executives with a High School education or less and
Undergraduate Degree, the 95% confidence interval shows an interval of 11.7 to 42.7 for the
Difference. This result indicates that:

• A) there is no significant difference between the two incomes.
• B) the interval contains a difference of zero.
• C) executives with an Undergraduate Degree earn significantly more than executives with a High School education or less.
• D) executives with an Undergraduate Degree earn significantly less than executives with a High School education or less.

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Definitions:

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A powerful, highly addictive stimulant that affects the central nervous system, commonly known as meth, blue, ice, and crystal, among other names.

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A class of drugs that increases the activity of the central nervous system, enhancing mental alertness, attention, and energy.

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The part of the nervous system consisting of the brain and spinal cord, which processes information and controls responses.

Midline

An imaginary line or anatomical axis that divides an organism's body into symmetrical or equal left and right halves.