7. Of two personnel evaluations techniques available, the first requires a two hour test interview while the second can be completed in less than an hour. The scores for each of the 15 individuals who...

Extracted text: 7. Of two personnel evaluations techniques available, the first requires a two hour test interview while the second can be completed in less than an hour. The scores for each of the 15 individuals who look both tests are given in the next table. Applicant Test 1 (x) Test 2 (y) 1 2 75 89 60 71 92 105 55 87 73 77 84 91 75 38 56 35 4 5 45 59 70 7 8 9 10 11 12 13 14 15 31 52 48 41 51 58 45 82 76 49 47 a) Find the least squares line for the data b) Use the regression line to predict the score on the second test for an applicant who scored 85 on test 1.