The numbers of polio cases in the world are shown in Table 36 for various years.

Let y be the number (in thousands) of polio cases at x years since 1980.
a. Construct a scatterplot.
b. Find an equation of a model and graph it on the scatterplot.
c. Describe the four characteristics of the association.
d. What is the base b of the model = abx? What does it mean in this situation?
e. The Polio Eradication and Endgame Strategic Plan 2013€“2018 is a strategy to have a polio-free world by 2018. Does your model suggest that the goal will be achieved? Do you have much faith in your result? Explain.

Transcribed Image Text:

Table 36 Numbers of Polio Cases Worldwide Number of Polio Cases thousands) Year 1988 1992 1996 2000 2004 2008 2011 2014 138 17 0.7