Difficulty Levels for Coding Projects: (Easiest = 1 to Hardest = 5)
Project 4: Calculating the Mean Difficulty Level 2
Project 5: Number of Outliers Difficulty Level 2
Project 6: Normal Right Tail Area Difficulty Level 2
Project 7: Normal Middle Area Difficulty Level 2
Project 8: Normal Finding Raw Score Difficulty Level 2
Project 9: Normal Finding Raw Scores from Middle Area: Difficulty Level 3
Practice Problems:
1) Find the mean of the dataset: 3, 5, 7, 8, 15, 22
2) Find the mean of the dataset: 10, 20, 30, 50, 90
3) The 5-number summary for a dataset is: 3, 10, 12, 16, 24. Calculate the number of known outliers in the dataset.
4) The 5-number summary for a dataset is: 3, 12, 13, 16, 25. Calculate the number of known outliers in the dataset.
5) The 5-number summary for a dataset is: 10, 12, 14, 16, 23. Calculate the number of known outliers in the dataset.
Commute times to a particular company's headquarters are normally distributed with mean 25 minutes and standard deviation 6 minutes.
6) What proportion of employees have a commute time greater than 30 minutes?
7) What proportion of employees have a commute time between 32 and 37 minutes?
8) If John has a commute time that is longer than 80% of employees, what is his commute time?
9) The middle 60% of commute times are between what two times? In other words, 60% of employees take between ___________ and ___________ to commute to work.