void page1() {
  String t = "Step 1 - The Assumptions";
  textFont(myboldfont, 18);
  text(t, 30, 170);
  textFont(myfont, 18);

  t = "The datum is Y from Bin(n,p) population. Y = " + aStudy.y;
  text(t, 30, 200);

  t = "n = " + aStudy.n + " is large. In order to apply Case 2: An approximate test for n large (Pg 348, Text), we have to check conditions: ";
  t +=  " Y > 10, and n - Y > 10. Are they satisfied? Choose the response then click Answer:";
  drawStrings(t, 30, 230, 25);

  fill(0, 0, 255);
  drawStrings(feedback, 80, 380,25);

  leftarrow.setVisible(false);
  cb1.setVisible(true);
  cb1.setXY(457,266);
  tf2.setVisible(false);
  tf3.setVisible(false);
  cb6.setVisible(false);
}