A Two-Factor Analysis of Variance Is Conducted to Test the Effect

question 18

Multiple Choice

A two-factor analysis of variance is conducted to test the effect that price and advertising have on sales of a particular brand of bottled water.Each week a combination of particular levels of price and advertising are used and the sales amount is recorded.The computer results are shown below. ANOVA
Based on the results above and a 0.05 level of significance,which of the following is correct?

• A)There is no interaction between price and advertising,so results for individual factors may be misleading.
• B)There is interaction between price and advertising,so the above results for individual factors may be misleading.
• C)There is no interaction between price and advertising,and both factors significantly affect sales.
• D)There is interaction between price and advertising,so the above results conclusively show that both factors affect price.

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Definitions:

Medusa

A jellyfish-like animal; a free-swimming, umbrella-shaped stage in the life cycle of certain cnidarians. Compare with polyp.

Planula

The free-swimming, ciliated larva form of certain cnidarians, such as jellyfish, before it settles on a surface and develops into a polyp.

Miracidium

A free-swimming larval stage in the life cycle of certain parasitic flukes, hatching from eggs and infecting the first intermediate host, typically a snail.

Polyp Colony

An aggregation of many individual, yet genetically identical, polyps that are connected, forming organisms such as corals.