Javier and Ercilia are supervisors at a shopping mall. Each was given the task of estimating the mean distance that shoppers live from the mall. They each randomly surveyed 100 shoppers. The samples yielded the following information.

  

      

  

a. How can you determine which survey was correct ?

  

b. Explain what the difference in the results of the surveys implies about the data.

  

c. If the two histograms depict the distribution of values for each supervisor, which one depicts Ercilia's sample? How do you know?

  

      

  

d. If the two box plots depict the distribution of values for each supervisor, which one depicts Ercilia’s sample? How do you know?

  

      

Javier Ercilia x 6.0 miles 6.0 miles s 4.0 miles 7.0 miles Table 2.78