A researcher believes that female stray cats are more cautiouswhen approaching people than male cats. He knows that the stray catpopulation is 50% male and 50% female. In order to test this,visits 15 different areas where stray cats live and records thegender of the first cat to approach him. He finds that 12 of the 15cats that approach him are male. Using a sign test:
D) What is the critical value? (In number of female cats)
