void page5() {
  String t = "Step 5 - The P-value";
  textFont(myboldfont, 18);
  text(t, 30, 194);
  textFont(myfont, 18);

  float row, col;

  if ((aStudy.known == 1) || (aStudy.samplesize>30)) { 

    if (testvalue>3.69) {
      t = "Use Table A.3 in the back of the book to the find the area to the left of z* (left-tailed value). Since z* = " + nf(testvalue, 1, 2) +
        ", look at row 3.6 and column 0.09.";
      drawStrings(t, 80, 244, 25);

      row = 3.6;
      col = 0.09;
    }
    else if (testvalue<-3.69) {
      t = "Use Table A.3 in the back of the book to the find the area to the left of z* (left-tailed value). Since z* = " + nf(testvalue, 1, 2) +
        ", look at row -3.6 and column 0.09.";
      drawStrings(t, 80, 244, 25);

      row = -3.6;
      col = 0.09;
    }
    else {
      row = int(testvalue * 10.0) / 10.0;
      col = round(abs(testvalue-row) * 100.0) / 100.0;

      t = "Use Table A.3 in the back of the book to the find the area to the left of z* (left-tailed value). Since z* = " + nf(testvalue, 1, 2) +
        ", look for row " + nf(row, 1, 1) + " and column " + nf(col, 1, 2)+".";
      drawStrings(t, 80, 244, 25);
    }
    
    if (row<0) {
      zvalue = (float)(Probability.normcdf(row-col));
    }
    else {
      zvalue = (float)(Probability.normcdf(row+col));
    }

    text(nf(col, 1, 2), 343, 310);
    text(nf(row, 1, 1), 230, 384);
    text(nf(zvalue, 1, 4), 330, 383);
    image(smalldown, 345, 325);
    image(smallright, 280, 360);
  } 
  else {
    zvalue = (float)(Probability.tcdf(testvalue, aStudy.samplesize-1));

    if (aStudy.k == 2) {
      tcomp = (float)Probability.tinv(0.975, aStudy.samplesize-1);

      t = "Use Table A.4 in the back of the book to the estimate the right-tailed value of t*. Since this is two-tailed, look for row n - 1 = " + nf(aStudy.samplesize-1, 1) + 
        " and column t_k,0.975. The table tells us that 2.5% of the area is to the right of " + nf(tcomp, 1, 4)+".";
      drawStrings(t, 80, 244, 25);
      text("t_k,0.975", 340, 340);
    }
    else {
      tcomp = (float)Probability.tinv(0.95, aStudy.samplesize-1);

      t = "Use Table A.4 in the back of the book to the estimate the right-tailed value of t*. Since this is one-tailed, look for row n - 1 = " + nf(aStudy.samplesize-1, 1) + 
        " and column t_k,0.95. The table tells us that 5% of the area is to the right of " + nf(tcomp, 1, 4)+".";
      drawStrings(t, 80, 244, 25);
      text("t_k,0.95", 340, 340);
    }
    text("k=" + nf(aStudy.samplesize-1, 1), 230, 414);
    text(nf(tcomp, 1, 4), 330, 414);
    image(smalldown, 345, 355);
    image(smallright, 280, 390);
  }

}