PreparED Study Materials
Notes
Videos
Young Adults' TV Habits: Decoding Mean and Probability
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Discover how to determine the probability and mean of young adults watching TV in a week. Using provided data, we compare the sample mean with the calculated population mean to interpret expected TV viewing habits.
Pet Phone Calls: Validating a 37% Claim with Z-test
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Explore a claim from the American Animal Hospital Association that 37% of pet owners communicate with their pets over the phone. Through hypothesis testing and a z-test, evaluate a skeptical veterinarian's doubts. Conclusions shed light on pet owners' unique communication habits.
Sullivan's Algebra Scores: Frequency to Probabilities Analysis
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Explore Sullivan’s College Algebra homework score analysis, from frequency distribution construction to in-depth statistical calculations such as standard deviation. Discover histogram visualizations, mean and median interpretations, and probability estimations for various score thresholds. Utilize Excel functions for precise calculations.
Crunching Car Sales Data: Size, Color, and Probability Insights
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Uncover the likelihood of different car combinations by size and color from a dealer's sales data. Learn how to calculate probabilities, from the chances of a small car being black to the odds a non-small car isn't gray. An insightful look into understanding car preferences.
Eye Color & Assortative Mating in Scandinavian Couples
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Explore the concept of assortative mating through an eye-color study of 204 Scandinavian couples. Discover how probabilities highlight nonrandom mating patterns. Conclude if eye colors of partners are independent or reveal assortative tendencies.
Car Theft Rates: Does Your Car Type Influence Risk?
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Explore the relationship between specific car types and their theft rates. This video assesses correlations between car models like the Honda Accord, Toyota Camry, and others, emphasizing the difference between correlation and causation.



















