PreparED Study Materials
Videos
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.
Evaluating Tornado Length Claims: A Statistical Breakdown
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Explore a statistical approach to analyze the claim about average tornado lengths. Understand the nuances of hypothesis testing, from setting null and alternative hypotheses to interpreting P-values. Witness a comprehensive breakdown of the evidence from a sample of 500 tornadoes.
Thread Strength After Heat Treatment: A 99% Confidence Analysis"
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Explore the impact of heat treatment duration on thread breaking strength. Using statistical analysis, we assess the difference in mean strengths between batches. Confidence intervals help quantify this difference with 99% certainty.
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.
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.
Computers in Schools: Probabilities & Distributions
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Assess the distribution of computers across schools using statistical methods. Determine the probability of a randomly selected school having a specific number of computers. From fewer than 50 to more than 100 computers, derive insightful conclusions about school infrastructures.

















