1. Students were paired by matching their IQs and grades in previous mathematics courses taken. Group A attended lecture and did homework. Group B watched videotapes and did work on a computer. Test to see if there is a significant difference in final exam scores for 2 groups at the .05 level.
   Lecture
   95
   87
   91
   85
   81
   79
   74
   73
   71
   69
   Tapes
   99
   91
   88
   90
   87
   78
   79
   81
   65
   74
2. In class of remedial English taught by lecture method, 52 out of 75 students completed the course with a passing grade. In same course with computer-assisted instruction, 69 out of 95 completed course with passing grade. At .05 level, is there a significant difference in passing rates for the 2 different methods of instruction?
3. Use following data to:

• Draw scatter plot
• Find coefficient of correlation and test significance at the .05 level
• Find regression line
• Predict y' for x=5
• Find coefficients of determination and non-determination
• Find standard error of estimate
• Find the 95% confidence interval for number of alcoholic drinks of x=5

Number of alcoholic drinks-x

2

1

3

4

2

1

5

6

Score on a dexterity test - y

15

18

11

7

10

16

4

2

1. Real estate agent found significant relationship among number of acres on farm (x sub 1), number of rooms in farmhouses (x sub 2), and selling price in ten thousands (y) of farms in specific area. Regression equations is y' = 44.9-0.0266 x sub 1 + 7.56 x sub 2. Predict selling price of farm that has 500 acres and farmhouse with 8 rooms.

Price: $12.0

Solution: The downloadable solution consists of 6 pages, 600 words and 1 charts.
Deliverable: Word Document