Suppose a Researcher Is Studying the Purchasing Behavior of Individuals

question 13

Essay

Suppose a researcher is studying the purchasing behavior of individuals buying dogfood. He hypothesizes that half the dog food purchases will be the big name brand,"Lassie Fritters" and that the remaining purchases will be divided equally betweentwo local brands, "Bow Wow Chow" and "Woof Woof Wafers."
a) What are the null and alternative hypotheses that would be used to decide if therewas convincing evidence against the researcher's hypothesized distribution ofpurchases across the three brands?
b) Suppose that each individual in a random sample of 200 purchasers providesinformation about his or her choice of brand. What are the expected counts forthe three brand categories?
c) How many degrees of freedom are associated with the chi-squared goodness-of-fitstatistic?
d)

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Definitions:

Copper Electroplating

A process of coating objects with a thin layer of copper by using an electric current to reduce dissolved copper ions onto an electrically conductive surface.

Copper Sulfate

A chemical compound formed by combining copper, sulfur, and oxygen (CuSO4).

Metallic Salt

A chemical compound that is generally in a crystal state and exhibits the properties of a metal.

Electroplating Operation

A process that uses electrical current to reduce dissolved metal ions so that they form a coherent metal coating on an electrode.