Answer:
a) Residents of San Antonia, Texas
b) Response variable
c) Explanatory variable
d) Observational study
e) Response bias
f) The appropriate scope of interest is the " relationship between age and the weekly average usage of local parks in San Antonia"
Explanation:
a) In this study, the objects or entities on which observation is done are the residents of San Antonia, hence they are the observational units.
b) In this observation, the number of visits per week is the response variable because it is the outcome of the observation. It is a dependent variable that varies due to variation in the ages.
c) Age is the variable that helps to predict the average number of visits to the park, it can then be called the predictor variable. It is independent of any external variable.
d) This is an observational study because it is meant to observe the relationship between the ages and the average number of visits to the park per week. The variables are not randomly assigned.
e ) The type of bias that is most concerning in this study is response bias. This is because it is a paper survey and their can be invalid responses either due to unfaithfulness or ignorance of the respondents.
f) The appropriate scope of the inference in this study is the relationship between the ages and the weekly average usage of local parks in San Antonia.