Scores on a Test Have a Mean of 72 and a Standard

question 38

Multiple Choice

Scores on a test have a mean of 72 and a standard deviation of 12. Random samples of size 64 are drawn from this population and the mean of each sample is determined. Use the Central Limit Theorem to find the mean
And standard error of the mean of the sampling distribution. Then sketch a graph of the sampling distribution.

• A) \(72,1.5\)
• B) \(72,12\)
• C) \(72,9\)
• D) \(9,1.5\)

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Definitions:

Moving Average

A calculation to analyze data points by creating averages of different subsets of the complete data set.

Cyclical Movement

Fluctuations in business activity experienced over time, usually tied to economic cycles.

Random Variation

The unpredictable changes in data that do not follow a recognizable pattern, often due to random effects or causes.

Moving Averages

A method used in time series analysis to smooth out short-term fluctuations and highlight long-term trends by averaging data points over specific periods.