PreparED Study Materials
Notes
Videos
Uniform Data: Probabilities of Sample Means
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
This video offers a comprehensive look into the discrete uniform population, analyzing a sample size of 54 selected with replacement. Through calculated steps, viewers learn how to determine probabilities for a sample mean within specified limits. Utilizing Z-scores and standard normal tables, the session illuminates statistical principles in real-world scenarios.
Football Field Goal Probabilities: A Multi-Player Analysis
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Discover the art of calculating probabilities in football. Using three players' success rates, we determine the odds of different goal outcomes. Understand independent and mutually exclusive events in a real-world scenario.
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.
Predicting Preference: Using Binomial Distribution for a New Dairy For
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Discover how the binomial distribution formula can predict the preference of judges for a new dairy drink formula. Understand the odds of different outcomes from unanimous approval to complete rejection. Dive into probability, expectations, and variance to decode consumer choices.
Analyzing Engineers' Graduate Plans: Fortune vs Engineering Horizons D
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
This video contrasts Fortune's claim about engineers pursuing further studies with data from Engineering Horizons. Utilizing hypothesis testing and confidence intervals, we assess the validity of Fortune's assertion within a statistical framework.
Electronic Failures: Deciding Between Minor & Major Defects Cost-Effec
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Discover the intricacies of determining the cause of electronic system failures, either minor or major defects, using statistical distributions. Learn how to minimize the expected cost and make informed decisions based on soundings and loss tables

