A group of nutritionists is hoping to prove that a new soybean compound has more protein per gram than roast beef, which has a mean protein content of 20. A random sample of 5 batches of the soy compound have been tested, producing protein contents of 15, 22, 17, 18, and 23. Which of the following conditions must be met in order to carry out a legitimate statistical test of thenutritionists claim?

TESTS OF SIGNIFICANCE

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

A group of nutritionists is hoping to prove that a new soybean compound has more protein per gram than roast beef, which has a mean protein content of 20. A random sample of 5 batches of the soy compound have been tested, producing protein contents of 15, 22, 17, 18, and 23. Which of the following conditions must be met in order to carry out a legitimate statistical test of thenutritionists’ claim?

A	The observations are from a Normally distributed population.
B	The data can be viewed as coming from a simple random sample.
C	The standard deviation of the population is known.
D	None of the above

Explanation:

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RESEARCH METHODOLOGY

STATISTICAL TECHNIQUES AND TOOLS

TESTS OF SIGNIFICANCE