For Exercises do a complete regression analysis.

a. Draw the scatter plot.
b. Compute the value of the correlation coefficient.
c. Test the significance of the correlation coefficient at α = 0.05.
d. Determine the regression line equation if r is significant.
e. Plot the regression line on the scatter plot if appropriate.
f. Predict Ý for a specific value of x if appropriate.

A researcher desires to know if the age of a child is related to the number of cavities he or she has. The data are shown here. If there is a significant relationship, predict the number of cavities for a child of 11.

Transcribed Image Text:

Age of child x No. of cavities y 6 2 8 9 10 12 13 4 6 14 5