The data for this problem come from a study of the number of visits to the doctor for a sample of n = 1127 people. The dataset includes three variables: "numvlslt" records the total number of visits to a doctor during the year; "badh" is an Indicator of whether the respondent is selfereported to have bad health (1 = yes); and "age" records the age In years, ranging from 20760. Refer to the above health survey. It is of interest to explore differences between the number of doctor visits for those who do and do not believe that they are in bad health. (a) Produce a comparative boxplot for the number of doctor visits for those who do and do not believe that they are In bad health, and comment on what the plot tells you. People who have self-reponed bad health tend to visit the doctor much more often than those who do not believe they are in bad health. O People who have selfreported bad health tend to visit the doctor with about the same frequency as those who do not believe they are In bad health. 0 People who have selfreported bad health tend to visit the doctor much less often than those who do not believe they are in bad health. (b) Calculate the sample mean number of doctor visits for the group that believes they are In bad health. (Round your answer to two decimal places.) 0.11 x Calculate the sample mean number of doctor visits for the group that does not believe they are in bad health. (Round your answer to two decimal places.) 2.37 x (c) Calculate the sample median number of doctor visits for the group that believes they are In bad health. :1 x Calculate the sample median number of doctor visits for the group that does not believe they are In bad health. 1 / (d) Using your answers to parts (b) and (c), comment on the differences between the two groups regarding the number of visits to the doctor. The average number of doctor visits for Indlvlduals who selfreport that they are In bad health ls_ / the average number of doctor visits for Individuals who do not self-report that they are In bad health. The median number of doctor visits for individuals who selfereport that they are In bad health Is / the median number of doctor visits for individuals who do not selfereport that they are in bad health. (e) Calculate the sample standard deviation of the number of doctor visits for the group that believes they are In bad health. (Round your answer to two decimal places.) x Calculate the sample standard deviation of the number of doctor visits for the group that does not believe they are in bad health. (Round your answer to two decimal places.) x Comment on the difference in the variability of the number of doctor visits between the two groups. The variability (as measured by the standard deviation) in the number of doctor visits for individuals who self-report that they are in bad health is / the variability (as measured by the standard deviation) number of doctor visits for Individuals who do not self-report that they are In bad health