PreparED Study Materials
STAT 6640: STAT 6640
School: Western Michigan University
Number of Notes and Study Guides Available: 1
Notes
Videos
Confidence Intervals for Bag Weights: A Statistical Guide
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Understand the process of determining the 94.26% confidence interval for the median weight of "80-pound" bags of water softener pellets using a standard normal table and specified formulas. Additionally, explore the steps to deduce a confidence level of 90.47%.
Comparing Ages: Slot Machine vs. Roulette Players
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Examine the mean ages between two distinct groups: slot machine players and roulette enthusiasts. Utilizing the independent sample t-test, evaluate if there's a significant age difference between the two groups. The findings offer a nuanced understanding of player demographics in gaming environments.
Understanding Null vs Alternative Hypotheses in Real-world Scenarios
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Explore various scenarios and understand the fundamental principles of the null and alternative hypotheses in statistical testing. This video breaks down how these hypotheses represent current beliefs and potential deviations, aiding in the interpretation of statistical findings.
Analyzing Ford F-750 Mileage Using Z-Scores & Probabilities
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Explore how z-scores help analyze the mileage of Ford Super Duty F-750 trucks. Discover the percentages that reached specific mileage markers and grasp the significance of data using the z-table.
Actinomycin D's Impact on RNA Synthesis: An Experimental Insigh
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Explore a biologist's experiment testing the effects of actinomycin D concentrations on RNA synthesis in cells. By analyzing the outcomes and calculating p-values, this video offers insights into how higher concentrations might inhibit normal RNA synthesis.
Calculating Confidence Interval for Educational TV Viewership
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Learn how to determine a 90% confidence interval for the proportion of people who watch educational television based on a survey. Understand how to utilize the z-score and interpret results, guiding decisions for a television company's publicity efforts.