In Which of the Following Situations Can a Confidence Interval

question 4

Multiple Choice

In which of the following situations can a confidence interval provide useful information for making a decision?

• A)To assess whether or not at least 90% of a company's financial entries are correct.
• B)To estimate the percentage of married couples in which the wife is taller than the husband.
• C)To help determine whether or not someone has ESP (versus just being a lucky guesser).
• D)All of the above.

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Definitions:

Snoring

A loud breathing sound occurring during sleep when the flow of air through the mouth and nose is physically obstructed.

Somnambulism

More commonly known as sleepwalking, it involves walking or performing other complex behaviors while in a state of deep sleep.

Narcolepsy

A neurological disorder characterized by uncontrollable episodes of deep sleep.

Insomnia

A widespread sleeping condition marked by troubles in initiating sleep, maintaining sleep, or achieving refreshing sleep.