Table 163
a Study Is Supposed to Examine the Relationship Between

Table 16.3
A study is supposed to examine the relationship between the amount spent on advertising a new product $(x)$ and consumer awareness of the product ( $y$ ) based on the proportion of people who have heard of it. Suppose a sample shows the data below for four different products.

-Use the data in Table 16.3 to solve the following:
a. Find the equation of the least-squares line that will allow us to predict consumer awareness from the advertising expense.
b. Calculate the standard error of estimate.
c. Can the equation found in part (a) be used for an advertising expense of 60 thousand dollars? Why or why not?