The Following Table Shows the Annual Returns (In Percent)for the Fidelity

question 21

Essay

The following table shows the annual returns (in percent)for the Fidelity Utilities fund from 2006 through 2010. a.Calculate the point estimate of σ².
b.Construct a 95% confidence interval of σ².

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Definitions:

Milgram Experiment

A psychological experiment conducted by Stanley Milgram in the 1960s to study obedience to authority, where participants were instructed to administer electric shocks to another person.

Stanford University Prison Experiment

A psychological study conducted by Philip Zimbardo in 1971 at Stanford University, where students were assigned roles of prisoners and guards to explore the effects of perceived power.

Generalization

Drawing a conclusion about a certain characteristic of a population based on a sample from it.

Logical Support

The provision of reasons or evidence to justify a claim or argument.