void page5() {
  background(255);

  String t = "Step 4 - The p-value (continued)";
  textFont(myboldfont, 18);
  text(t, 30, 40);
  textFont(myfont, 18);

  if (aStudy.k==0) {
    t = "Since the alternative is left-tailed, we use the formula: ";
    text(t, 30, 70);

    image(p1, 80, 100);
    generateGraph(testl, 1, 0);
    image(pg, 400, 100);

    t = "p_ = " + nf(pl, 1, 4);
    text(t, 80, 150);
    pvalue = pl;

    t = "Thus, the p-value equals " + nf(pvalue, 1, 4)+".";
    text(t, 30, 200);
  }
  else if (aStudy.k==1) {
    t = "Since the alternative is right-tailed, we use the formula: ";
    text(t, 30, 70);

    image(p2, 80, 100);
    generateGraph(testu, 0, 0);
    image(pg, 400, 100);

    t = "p+ = 1 - " + nf(pu, 1, 4) + " = " + nf(1-pu, 1, 4);
    text(t, 80, 150);
    pvalue = 1-pu;

    t = "Thus, the p-value equals " + nf(pvalue, 1, 4)+".";
    text(t, 30, 200);
  }  
  else {
    t = "Since the alternative is two-tailed, we use these formulas: ";
    text(t, 30, 70);

    image(p1, 80, 100);
    generateGraph(testl, 1, 0);
    image(pg, 400, 100);

    t = "p_ = " + nf(pl, 1, 4);
    text(t, 80, 150);

    image(p2, 80, 200);
    generateGraph(testu, 0, 1);
    image(pg, 400, 200);

    t = "p+ = 1 - " + nf(pu, 1, 4) + " = " + nf(1-pu, 1, 4);
    text(t, 80, 250);

    image(p3, 80, 300);

    if (pl < 1-pu) {
      pvalue = 2*pl;
    }
    else {
      pvalue = 2*(1-pu);
    }

    t = "p± = 2 * " + nf(pvalue/2, 1, 4) + " = " + nf(pvalue, 1, 4);
    text(t, 80, 350); 
    t = "Thus, the p-value equals " + nf(pvalue, 1, 4)+".";
    text(t, 30, 400);
  }
}