TABLE 10-8 a Few Years Ago, Pepsi Invited Consumers to Take the Take

question 133

Short Answer

TABLE 10-8
A few years ago, Pepsi invited consumers to take the "Pepsi Challenge." Consumers were asked to decide which of two sodas, Coke or Pepsi, they preferred in a blind taste test. Pepsi was interested in determining what factors played a role in people's taste preferences. One of the factors studied was the gender of the consumer. Below are the results of analyses comparing the taste preferences of men and women with the proportions depicting preference for Pepsi.
Males: n = 109, pM = 0.422018 Females: n = 52, pF = 0.25
pM - pF = 0.172018 Z = 2.11825
-Referring to Table 10-8, construct a 95% confidence interval estimate of the difference between the proportion of males and females who prefer Pepsi.

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Definitions:

Erythropoiesis

The process of producing red blood cells (erythrocytes) in the bone marrow.

Erythropoietin

A hormone produced by the kidneys that stimulates the production of red blood cells in response to hypoxia.

Rate

A measure of how quickly or slowly something happens or changes over a particular period of time.

Fetal Hemoglobin

A type of hemoglobin found in fetuses that has a higher affinity for oxygen than the adult form, facilitating oxygen transfer from the mother to the fetus.