void page3() {
  String t = "Step 3 - The Test Statistics";
  String t2;
  textFont(myboldfont, 18);
  text(t, 30, 170);
  textFont(myfont, 18);

  testl = (aStudy.y - aStudy.n * aStudy.p + 0.5)/sqrt(aStudy.n * aStudy.p * (1-aStudy.p));
  testu = (aStudy.y - aStudy.n * aStudy.p - 0.5)/sqrt(aStudy.n * aStudy.p * (1-aStudy.p));

  if (aStudy.k==0) {
    t = "Since the alternative is left-tailed, we calculate: ";
    text(t, 30, 200);
    image(zl, 70, 220);

    t2 = "Z_l of " + nf(testl, 1, 4)+".";
  }
  else if (aStudy.k==1) {
    t = "Since the alternative is right-tailed, we calculate: ";
    text(t, 30, 200);
    image(zu, 70, 220);

    t2 = "Z_u of " + nf(testu, 1, 4)+".";
  }
  else {
    t = "Since the alternative is two-tailed, we calculate: ";
    text(t, 30, 200);
    image(zl, 70, 220);
    image(zu, 300, 220);

    t2 = "Z_l of " + nf(testl, 1, 4);
    t2 += " and a Z_u of " + nf(testu, 1, 4)+".";
  }

  t = "Plugging in: Y as " + aStudy.y + ", n as " + aStudy.n + ", and p zero as " + nf(aStudy.p, 1, 2) + " gives us a " + t2;
  drawStrings(t, 30, 300,25);
}