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Normal Distribution and Standard Error

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II. STATEMENT OF THE PROBLEM As part of a long-term study of individuals 65 years of age or older, sociologists and physicians at the Wentworth Medical Center in upstate New York investigated the relationship between geographic location, health status ( healthy or one or more comorbidities), and depression. Random samples of 20 healthy individuals were selected from three geographic locations: Florida, New York, and North Carolina. Then, each was given a standardized test to measure depression (higher test scores indicate higher levels of depression). Similarly, random samples of 20 individuals with one or more comorbidities (arthritis, hypertension, and/or heart ailment) were taken from the three geographic locations. They were also …show more content…

Data Summary

Table 2.1. Descriptive Statistics for Data from Medical 1 (Good Health)
|Alpha value (for confidence interval) |0.02 | | | | |
|Variable #1 (Florida) | | |
|Count |20 |Skewness |-0.2526 |Confidence Level: | |
| | | | |1.1992 | |
|Mean |5.55 |Skewness Standard Error |0.48582 | | |
|Mean LCL |4.33525

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