Physical Sciences
As the temperature of air increases, it has a greater capacity to hold moisture. However, humidity can only increase if there is a supply of moisture. For the area of southern Florida, a random sample of days was obtained and the relative humidity (x, a percentage) and daily temperature (y, in °F) were recorded for each.17
a. Construct a scatter plot of the data.
b. Find the sample correlation coefficient.
c. Based on the value of r in part (b), predict the sign of b = 1 in the estimated regression line.
d. Find the estimated regression line. Do the results support your answer to part (c)? Why or why not?