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The makers of a soft drink want to identify the average age of its consumers. A sample of 16 consumers is taken. The average age in the sample was 22.5 years with a standard deviation of 5 years. Assume the population of consumer ages is normally distributed.
a.Construct a 95% confidence interval for the average age of all the consumers.
b.Construct an 80% confidence interval for the average age of all the consumers.
c.Discuss why the 95% and 80% confidence intervals are different.
Most Assertive
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A vocal expression indicating discomfort or unease, whether physical or emotional.
Nonverbal Cues
Forms of communication without words, such as gestures, body language, facial expressions, and other visual cues, that convey meaning or emotion.
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Eyewear with significantly strong lenses prescribed to correct severe visual impairments, making the lenses noticeably thicker than average.
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