# STAT 380: Statistics & Applications

### School: University of Nebraska Lincoln

Number of Notes and Study Guides Available: 3

### Videos

##### U.S. Adult Satisfaction in 2010: Confidence Interval Analysis

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Discover how to construct a confidence interval for understanding U.S. adult satisfaction. Using a sample from a 2010 Gallup Poll, we unveil the proportion of adults pleased with the state of affairs, backed by statistical calculations.

##### Exit Poll Analysis: Education Funding Referendum Votes

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Explore the application of proportion z-tests in analyzing exit polling data. Understand how to determine the likelihood of sample results given a population proportion. Recognize the importance of considering non-sampling errors in interpreting exit poll outcomes.

##### Decoding Probabilities: Unions, Intersections, and Complements

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Explore the intricacies of calculating probabilities using set theory concepts such as union and intersection. With step-by-step computations, understand how to find the likelihood of events A and B occurring or not occurring together. Witness the application of classic probabilistic formulas.

##### Analyzing Age Distribution of Proofreaders: A Statistical Approach

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Discover the statistical process behind analyzing the age distribution of proofreaders at a publishing company. Learn how to use the Z-score formula for individual and sample mean probabilities, and how to interpret results using a Z-table.

##### Choosing Samples: The Math of Online Freebies

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Discover the mathematical principles behind choosing free samples in online shopping scenarios. Understand combinations, how to calculate them, and see real-world examples of selecting multiple items.

##### Calcium in Chautauqua's Rain: 1990 vs. 2010 Analysis

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Explore the calcium concentration in Chautauqua's rainwater from 2010, comparing it to 1990 levels. Using statistical tests, examine normal distribution and determine significant changes. The results provide insights into environmental shifts over two decades.

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