Find Conditional and Marginal Distributions

question 18

Multiple Choice

Find conditional and marginal distributions.
-A large national retailer of electronics conducted a survey to determine consumer
Preferences for various brands of digital cameras and the data are summarized in the table
Shown below. Of the consumers who are male, the percentage who prefer Pentax is
Female Male Total
Sony Cyber-Shot 73 59 132
Kodak - Easy Share 49 47 96
Cannon Power Shot 58 33 91
Pentax 37 41 78
Olympus 45 28 73
Other Brands 86 67 153
Total 348 275 623

• A) 44.1 % (275 / 623).
• B) 6.6% (41 / 623).
• C) 52.6% (41 / 78).
• D) 14.9% (41 / 275).
• E) 12.5% (78 / 623).

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Definitions:

Rh Factors

Antigens present on the surface of red blood cells that can cause a reaction between the blood of the mother and fetus, important in pregnancy and blood transfusion compatibility.

Antibodies

Proteins produced by the immune system to identify and neutralize foreign objects like bacteria and viruses.

Accutane

A medication primarily used to treat severe acne, known for its potential risk of severe birth defects if taken during pregnancy.

Birth Control

Methods or devices used to prevent pregnancy, ranging from hormonal and barrier methods to surgical procedures and behavior strategies.