Stat 1040
Chapter 12 Solutions

  1. income = 960 * height - 37,400.
    It seems that taller men make more money, on average.

  2. The slope means that the heavier men are taller, on average, than the lighter ones. For example, the 141-pound men average about 0.047 inches taller than the 140-pound men.

  3. False - there are two lines, you can't just solve the equation. (The real line has slope 0.32).

    1. True
    2. False
    3. False
    4. True
    5. True

  5. 1/2000.

  6. No, it's likely to be too high. You need to use the other line - a better estimate is around $26,000.

  7. Something's wrong because the line should go through the point of averages.

  8. No - there is no consistent pattern.