Suppose Nine Items Are Randomly Sampled from a Normally Distributed

question 87

Multiple Choice

Suppose nine items are randomly sampled from a normally distributed population with a mean of 100 and a standard deviation of 20.The nine randomly sampled values are: Calculate the probability of getting a sample mean that is smaller than the sample mean for these nine sampled values.

• A)0.1411
• B)0.1612
• C)0.1512
• D)0.2266

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Definitions:

Random Sample

A subset of individuals chosen from a larger set where each individual has an equal chance of being selected.

After-School Program

Educational and recreational activities organized for children after the regular school day has ended, often aimed at furthering learning and social development.

Causation

The relationship between cause and effect where one event (the cause) is understood to be responsible for the occurrence of another event (the effect).

Correlation

A measure of the relationship between two variables or sets of data.