void page1() {
  generateGraph(1, false, 0);
  image(pg, 400, 200);

  String t = "Step 1";
  textFont(myboldfont, 18);
  text(t, 30, 110);
  textFont(myfont, 18);

  if (aStudy.testvalue>3.69) {
    value = .9999;

    t = "Open Table A.3 in the back of the book. Since z* = " + nf(aStudy.testvalue, 1, 2) +", look for the largest value possible, which are row 3.6 and column 0.09";
    drawStrings(t, 30, 140, 25);

    text("0.09", 265, 210);
    text("3.6", 130, 300);
    text("0.9999", 250, 300);
  }
  else if (aStudy.testvalue<-3.69) {
    value = .0001;

    t = "Open Table A.3 in the back of the book. Since z* = " + nf(aStudy.testvalue, 1, 2) +", look for the smallest value possible, which are row -3.6 and column 0.09";
    drawStrings(t, 30, 140, 25);

    text("0.09", 265, 210);
    text("-3.6", 130, 300);
    text("0.0001", 250, 300);
  }
  else {
    value = (float)(Probability.normcdf(aStudy.testvalue));
    float row = int(aStudy.testvalue * 10.0) / 10.0;
    float col = round(abs(aStudy.testvalue-row) * 100.0) / 100.0;

    t = "Open Table A.3 in the back of the book. Since z* = " + nf(aStudy.testvalue, 1, 2) + ", look for row " + nf(row, 1, 1) + " and column " + nf(col, 1, 2);
    drawStrings(t, 30, 140, 25);

    text(nf(col, 1, 2), 265, 210);
    text(nf(row, 1, 1), 130, 300);
    text(nf(value, 1, 4), 250, 300);
  }

  image(smalldown, 265, 230); 
  image(smallright, 190, 275);

  t = "Thus, the left-tailed value (in red) equals " + nf(value, 1, 4);
  text(t, 30, 350);

  leftarrow.setVisible(false);
  rightarrow.setVisible(true);
}