PreparED Study Materials
Notes
Videos
Testing the Claim: Is Soft Drink Consumption Really 52 Gallons?
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Discover the process of using a one-sample t-test to validate a claim about average soft drink consumption. By calculating the test statistic and analyzing the corresponding P-value, we determine the validity of the researcher's assertion.
Lake Macatawa Bacteria: 90% Confidence Analysis
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Discover the method to analyze bacteria colonies in Lake Macatawa's east basin. Using 30 samples, we compute a 90% confidence interval for the mean colony count. Learn the steps of statistical analysis in environmental studies.
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Probabilities with Poisson Variables X1 & X2
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Explore the complexities of two independent Poisson random variables, X1 and X2, with means ?1 = 2 and ?2 = 3. Understand the process of calculating specific event probabilities and the application of the Poisson formula. Key takeaways include the manipulation and interpretation of these statistical values.
Calculating Confidence Interval for Educational TV Viewership
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
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.
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