For a Sample 1000 Twitter Users, Tele-Market Research Reports an Average

question 49

Multiple Choice

For a sample 1000 Twitter users, Tele-Market Research reports an average age of 39.If the population standard deviation is 9.5 years, what would be the upper bound for an 80% confidence interval estimate of the mean age of all Twitter users?

• A)42.37
• B)39.38
• C)41.30
• D)39.62
• E)43.13

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Definitions:

External Cues

Environmental signals or triggers that can elicit or influence behavior, emotions, or physiological responses.

Circadian Rhythm

The internal process that regulates the sleep-wake cycle and repeats on each rotation of the Earth roughly every 24 hours.

Day-Night Cycle

The 24-hour period that includes one full rotation of the Earth, leading to the natural alternation between daylight and nighttime.