A Random Sample of 16 Companies Was Selected and Asked

question 112

Multiple Choice

A random sample of 16 companies was selected and asked for their annual dividend rate in three different industries: utilities, banking, and insurance. The ANOVA comparing the mean annual dividend rate among three industries rejected the null hypothesis. The Mean Square Error (MSE) was 3.36. The following table summarized the results: Based on the comparison between the mean annual dividend rate for companies in the utilities and banking, the 95% confidence interval shows an interval of 1.28 to 6.28 for the difference. This result indicates that

• A) There is no significant difference between the two rates.
• B) The interval contains a difference of 5.00.
• C) The annual dividend rate in the utilities industry is significantly less than the annual dividend rate in banking industry.
• D) The annual dividend rate in banking industry is significantly less than the annual dividend rate in utilities industry.

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Definitions:

Macrophages

Large white blood cells that are part of the immune system, engulfing and digesting cellular debris, foreign substances, and pathogens.

Vitamin K

A group of fat-soluble vitamins essential for the synthesis of proteins involved in blood coagulation and bone metabolism.

Prothrombin

A protein in blood plasma that is converted into active thrombin during coagulation.

Liver

A large, vital organ in vertebrates, involved in numerous metabolic processes including detoxification, protein synthesis, and the production of biochemicals necessary for digestion.