TABLE 8-1 A Random Sample of 100 Stores from a Large Chain

question 283

True/False

TABLE 8-1
A random sample of 100 stores from a large chain of 500 garden supply stores was selected to determine the mean number of lawnmowers sold at an end-of-season clearance sale. The sample results indicated a mean of 6 and a standard deviation of 2 lawnmowers sold. A 95% confidence interval (5.623 to 6.377) was established based on these results.
-Referring to Table 8-1, of all possible samples of 100 stores drawn from the population of 1,000 stores, 95% of the sample means will fall between 5.623 and 6.377 lawnmowers.

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Definitions:

Standard Deviation

A statistic that measures the dispersion or variability of a dataset relative to its mean, indicating how spread out the data points are.

Raw Scores

The initial, unaltered scores obtained in an assessment before undergoing any transformation or normalization.

Test-retest Reliability

The consistency of a measure evaluated by testing the same individuals at two different points in time and comparing the scores.

NCE Type Scores

NCE Type Scores, or Normal Curve Equivalent scores, are standardized test scores that range from 1 to 99, representing a test taker's position relative to a norming group on a normal curve.