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The Makers of a Soft Drink Want to Identify the Average

question 27

Essay

The makers of a soft drink want to identify the average age of its consumers. A sample of 55 consumers was taken. The average age in the sample was 21 years with a standard deviation of 4 years.
a.Construct a 95% confidence interval for the true average age of the consumers.
b.Construct an 80% confidence interval for the true average age of the consumers.
c.Discuss why the 95% and 80% confidence intervals are different.


Definitions:

Sexual Orientation

Sexual orientation is a pattern of emotional, romantic, or sexual attraction to the opposite sex, same sex, both sexes, or neither, which forms part of a person's identity.

Erotic Plasticity

The degree to which an individual's sex drive can be changed by outside forces such as social, environmental, or situational factors.

Homosexual Desires

Sexual attraction or desire between individuals of the same sex.

Sexual Orientations

The inherent or enduring pattern of emotional, romantic, or sexual attraction to people of the opposite sex, same sex, both sexes, or more than one gender.

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