Cholesterol and Smoking A study examining the health risks of smoking measured the cholesterol levels of people who had smoked for at least 25 years and people of similar ages who had smoked for no more than five years and then stopped. Create appropriate graphical displays for both groups, and write a brief report comparing their cholesterol levels. Here are the data:

1. Identify the W's for the data. Include in your answer all of the W's and if the information isn't provided, say "not specified" or "n/a"

2. State the values of the mean and standard deviation from the Minitab output. Mean: Standard deviation: 3. Identify the Median from the Minitab output. Median: 4. Based on the mean and median, what shape do you expect the distribution to have (left-skewed, right-skewed, or approximately symmetric)? Briefly explain your answer. 5. The graphs are missing proper titles. What would be an appropriate title for the histogram? 6. Use the histogram to describe the shape of the distribution in terms of symmetry, modality, gaps, and outliers. 7. What percentage of smokers have a cholesterol level of 300 or more? Calculation: + Answer: %

8. The most common range (i.e. mode) for the cholesterol level of smokers is what

9 . Comment on any two similarities and differences between the two graphs. 10. Which graph do you prefer? Why?