Unit III Assignment – Practice Problem Exercise
- Hyperlipidemia in children has been hypothesized to be related to high cholesterol in their parents. The following data were collected on parents and children.
| CHILD | Both Parents Hyperlipidemic | One Parent Hyperlipidemic | Neither Parent Hyperlipidemic |
| Not Hyperlipidemic | 13 | 34 | 83 |
| Hyperlipidemic | 45 | 42 | 6 |
- What is the probability that one or both parents are hyperlipidemic? (2.5 points)
Probability:
- What is the probability that the child and both parents are hyperlipidemic? (2.5 points)
Probability:
- What is the probability that a child is hyperlipidemic if neither of his/her parents are hyperlipidemic? (2.5 points)
Probability:
- What is the probability that a child is hyperlipidemic if both of his/her parents are hyperlipidemic? (2.5 points)
Probability:
- Summarize the data found in this case study. (15 points)
Please be sure to include the following:
1) Describe the hypothesis, was the outcome hypothesized correctly? Please explain.
2) Imagine you are writing a brief synopsis of this case study. In 2-3 paragraphs, discuss the following:
- a) Purpose of the study.
- b) Participants of the study.
- c) Why was the study conducted?
- d) Based on the data provided and your biostatistical analysis, quantify and propose solutions to support public and populations-based health challenges.
Synopsis
- A national survey of graduate students is conducted to assess their consumption of coffee. The following table summarizes the data:
| Do not drink coffee | Drink Decaffeinated Coffee Only | Drink Caffeinated Coffee | |
| Male | 145 | 94 | 365 |
| Female | 80 | 121 | 430 |
- What proportion of students drink decaffeinated coffee only? (2.5 points)
Proportion:
- What proportion of coffee drinkers (caffeinated and decaffeinated) are female? (2.5 points)
Proportion:
- What proportion of the females do not drink coffee? (2.5 points)
Proportion:
- Summarize the data found in this case study. (17.5 points)
Please be sure to include the following:
1) Imagine you are writing a brief synopsis of this case study. In 2-3 paragraphs, discuss the following:
- a) Purpose of the study.
- b) Participants of the study.
- c) Why was the study conducted?
- d) Based on the data provided and your biostatistical analysis, quantify and propose solutions to support public and populations-based health challenges.
Synopsis:
- Investigators want to assess the accuracy of self-reported smoking status. Participants are asked whether they currently smoke or not. In addition, laboratory tests are performed on hair samples to determine presence or absence of nicotine. The laboratory assessment is considered the gold standard, or truth about nicotine. The data follows:
| Nicotine Absent | Nicotine Present | |
| Self-Reported Non-Smoker | 82 | 14 |
| Self-Reported Smoker | 12 | 52 |
- What is the sensitivity of self-reported smoking status? (5 points)
Sensitivity:
- What is the specificity of self-reported smoking status? (5 points)
Specificity:
- Summarize the data found in this case study. (15 points)
Please be sure to include the following:
1) Describe why the laboratory standard is considered the gold standard.
2) Imagine you are writing a brief synopsis of this case study. In 2-3 paragraphs, discuss the following:
- a) Purpose of the study.
- b) Participants of the study.
- c) Why was the study conducted?
- d) Based on the data provided and your biostatistical analysis, quantify and propose solutions to support public and populations-based health challenges.
Synopsis:
- The following table displays the number of children in a local town classified as normal weight, overweight, and obese by year in school.
| Normal Weight | Overweight | Obese | Total | |
| Elementary | 50 | 120 | 80 | 250 |
| Middle | 30 | 45 | 45 | 120 |
| Junior High | 50 | 50 | 40 | 140 |
| High School | 30 | 85 | 85 | 200 |
| Total | 160 | 300 | 250 | 710 |
- What proportion of the children are obese? (2.5 points)
Proportion:
- What proportion of the elementary school children are overweight or obese? (2.5 points)
Proportion:
- What proportion of the normal weight children are in high school? (2.5 points)
Proportion:
- Summarize the data found in this case study. (17.5 points)
Please be sure to include the following:
1) Based on the data above, where you surprised about the overweight and obese totals? Please discuss.
2) Imagine you are writing a brief synopsis of this case study. In 2-3 paragraphs, discuss the following:
- a) Purpose of the study.
- b) Participants of the study.
- c) Why was the study conducted?
- d) Based on the data provided and your biostatistical analysis, quantify and propose solutions to support public and populations-based health challenges.
Synopsis:
