The Distribution of Sample Means for Scores on a Test

question 59

Multiple Choice

The distribution of sample means for scores on a test for samples of size 100 is normal with a mean of 61.7 and a standard deviation of 1.5. If a sample of 100 test scores is selected at random, what is the probability that the sample mean will be greater than 63.8?

• A)0.9192
• B)0.0668
• C)0.0808
• D)1.4

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Definitions:

Mouth

The opening in the body of most animals through which food is taken in, beginning the process of digestion.

Gallbladder

A small organ located under the liver, which stores and concentrates bile, a digestive fluid produced by the liver.

Protein Digestion

The breakdown of protein molecules into their constituent amino acids by enzymes, starting in the stomach and continuing in the small intestine.

Stomach

A muscular organ in the gastrointestinal tract of mammals, responsible for digesting food through a mixture of enzymes and acids.