Consider the following data for number of hours a student reviews for his exam and the scores obtained in the final examination. Answer the accompanying questions. Show all solutions. Use the table as a guide to your answer.

3. Decide if the correlation coefficient is significant using the table below.

4. Find the equation of the regression line.Test the significance of the correlation coefficient. Use 5%. Use the table below.

Table 11-4 Significant Values for the Correlation Coefficient Sample Size 5% 1% Sample Size 5% 1% .950 .990 17 482 606 .878 959 18 .468 590 811 917 19 456 575 .754 .875 444 .561 707 834 433 .549 .666 .798 423 .537 .632 .765 .412 526 .602 .735 403 515 576 .708 .396 .505 .553 .684 .361 463 .532 661 40 .312 402 514 641 60 254 330 497 623 120 179 234