A Random Sample of 30 Executives from Companies with Assets

question 58

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: Based on the comparison between the mean annual incomes for executives with Undergraduate and Master's Degree or more,

• A) A confidence interval shows that the mean annual incomes are not significantly different.
• B) The ANOVA results show that the mean annual incomes are significantly different.
• C) A confidence interval shows that the mean annual incomes are significantly different.
• D) The ANOVA results show that the mean annual incomes are not significantly different.

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Definitions:

Eyelid

A fold of skin that covers and protects the eye.

Macular Degeneration

A medical condition which may result in blurred or no vision in the center of the visual field due to damage to the macula.

Cataracts

A common eye condition where the lens of the eye becomes progressively opaque, leading to blurred vision.

Glaucoma

A group of eye conditions that damage the optic nerve, often due to abnormally high pressure in the eye, leading to vision loss.