A Statistician Believes That the Standard Deviation of the Weights $a = 0.05$

question 84

Multiple Choice

A statistician believes that the standard deviation of the weights of firemen is less than 25 pounds. A sample of 20 firemen had a standard deviation of 23.2 pounds. Assume that the variable is normally
Distributed with $a = 0.05$ . What is the critical value?

• A) 31.410
• B) 30.144
• C) 10.851
• D) 10.117

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Definitions:

Rubber Boots

Waterproof footwear made of rubber, designed to keep the feet dry and protected in wet conditions.

Correlation

A measure of the relationship between two variables or sets of data, indicating the strength and direction of an association.

Independent Variable

Variable in an experiment that is manipulated by the experimenter.

Dependent Variable

A variable in an experiment that is expected to change in response to changes in the independent variable.