Need help with last question **Study on Sleep Apnea and Gum Disease****Introduction:** Sleep apnea is a disorder characterized by pauses in breathing or shallow breaths during sleep. A cross-sectional study involved 310 adults with sleep apnea, revealing that 155 of them also had gum disease. In comparison, about 17.5% of the general population suffers from gum disease.**Study Analysis:****(a) Cross-Sectional Study:**- The study design involves data collected at a specific point in time, making it an observational study.**Answer:**- **C.** The data were obtained at a specific point in time and the study was an observational study.**(b) Variable of Interest:**- The main focus is to identify if having sleep apnea relates to a higher incidence of gum disease.**Options:**- The primary variable is the proportion of gum disease present in individuals with sleep apnea.- This variable is qualitative since it classifies individuals based on the presence or absence of gum disease.**Answer:**- **C.** The proportion of gum disease present in those with sleep apnea.- The variable is qualitative because it is not numerically measured.**(c) Confidence Interval Interpretation:**- A 99% confidence interval for the proportion of individuals with sleep apnea who also have gum disease is to be estimated.**Options:**- **B.** A 99% confidence interval implies that for the population of individuals with sleep apnea, the true proportion with gum disease lies between the calculated values.**Conclusion:**The study suggests a potential link between sleep apnea and increased prevalence of gum disease, warranting further investigation into causative factors and management strategies.

From the provided information, Sample size (n) = 310 From which 155 had gum disease. Confidence…

Sloep apnea is a disorder in which you have one or more pauses in breathing or shalow breaths while you sleep. In a cross-sectional study of 310 adults who sufor from sleep apnea, it was found that 155 had gum disease. Note: In the general population, about 17.5% of individuals have gum disease. Complete parts (a) through (c) below. (a) What does it mean for this study to be cross-sectional? OA The data were obtained at a specific point in time and the study was an experiment. B. The data were obtained over the course of time and the study was an observational study. C. The data were obtained at a specific point in time and the study was an observational study. OD. The data were obtained over the course of time and the study was an experiment. (b) What is the variable of interest in this study? Is it qualitative or quantitative? Explain. Identify the variable of interest. Choose the correct answer below. A Whether a person with sleep apnea has gum disease or not OB Whether a person has sloep apnea or not OC. The proportion of gum disease present in those with sleep apnea OD. Whether a person has gum disease or not Determine whether the variable in question is qualitative or quantitative. Choose the correct answer below. OA The variable is quantitative because it dlassifies the individuals in the study. X8. The variable is quantitative because it can be numerically measured. *c. The variable is qualitative because it dassifies the individuals in the study. OD. The variable is qualitative because it can be numerically measured. (c) Estimate the proportion of individuals who suffer from sleep apnea who have gum disease with 99% confidence. Interpret your resuit. Select the correct choice below and fil in the answer boxes to complete your choice. (Use ascending order. Round to three decimal places as needed.) OA There is 99% confidence that the population proportion of individuals who suffer from sleep apnea who have gum disease is between and. OB. 99% of the population lies in the interval between and- OC. There is a 99% chance that the true population proportion of individuals who sufer from sleep apnea who have gum disease is between and