A Random Sample of Size 15 Taken from a Normally

question 47

Multiple Choice

A random sample of size 15 taken from a normally distributed population revealed a sample mean of 75 and a sample variance of 25.The upper limit of a 95% confidence interval for the population mean would equal:

• A)77.77
• B)72.23
• C)88.85
• D)77.27

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Definitions:

Fatty Foods

Foods high in fat content, often associated with negative health impacts such as increased risk of obesity and heart disease.

Balloon Angioplasty

A procedure using a slender, hollow tube passed through a coronary artery to compress a blockage in the artery.

Artery

An artery is a blood vessel that carries oxygenated blood away from the heart to various parts of the body.

Blockage

An obstruction that prevents movement or flow, often within a pipe, tube, or other passage in the body.