void page5() {
  String t = "Step 4 - The Test Statistics (continued)";
  textFont(myboldfont, 18);
  text(t, 30, 160);

  if (aStudy.known == 1) {
    image(test1, 260, 190);

    t = "Plug in Y bar as " + nf(aStudy.mean, 1, 2) + ", mu zero as " + nf(aStudy.muo, 1, 2) + ", sigma as " 
      + nf(aStudy.sd, 1, 2) + ", and n as " + aStudy.samplesize;
  } 
  else if (aStudy.samplesize > 30) {
    image(test2, 260, 190);

    t = "Plug in Y bar as " + nf(aStudy.mean, 1, 2) + ", mu zero as " + nf(aStudy.muo, 1, 2) + ", S as " 
      + nf(aStudy.sd, 1, 2) + ", and n as " + aStudy.samplesize;
  } 
  else {   
    image(test3, 260, 190);

    t = "Plug in Y bar as " + nf(aStudy.mean, 1, 2) + ", mu zero as " + nf(aStudy.muo, 1, 2) + ", S = " 
      + nf(aStudy.sd, 1, 2) + ", and n as " + aStudy.samplesize;
  }

  if ((aStudy.known == 1) || (aStudy.samplesize>30)) {
    t += ". Calculate the value of Z. Type in the following textbox (with at least 3 decimal places) then click Answer:";
  }
  else {
    t += ". Calculate the value of t. Type in the following textbox (with at least 3 decimal places) then click Answer:";
  }
  int tempx = drawStrings(t, 30, 255+25, 25);

  fill(0, 0, 255);
  drawStrings(feedback, 80, 380, 25);
  
  tf3.setVisible(true);
  tf3.setXY(tempx+10,313);
  cb4.setVisible(false);
}