The percentages of seniors with severe memory impairment (based on memory tests) are shown in Table 28.

Let y be the percentage of seniors at age x years with severe memory impairment.
a. Construct a scatterplot by hand.
b. Graph the equation = 0.00067(1.119)x by hand 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?

Transcribed Image Text:

Table 28 Percentages of Seniors with Severe Memory Impairment Age Group (years) 65-69 70-74 75-79 80-84 over 84 Age Used to Represent Age Group (years) 67 72 Percent 1.1 2.5 4.5 6.4 12.9 82