Question: An enzyme A is secreted by the tissues. Recently scientists investigated whether this enzyme would stimulate trust level behavior. Researchers used a synthetic version in the nasal spray to study enzyme A’s influence on female college students from schools in Egypt playing an investigation game. Each of the 58 female was paid $ 90 to participate in the experiment. They were randomly assigned to receive either the Enzyme A or a placebo (fake treatment). In the gaMean investigator could choose to hand over to a trustee up to 15 tokens of money, each valued at about 35 cents and redeemable at the end of the experiment.

Of 29 subjects who got the enzyme, 13(45%) invested the maximum amount of 12 monetary units and, in the researchers' words, showed 'maximal trust. 'In placebo group of the 29 subjects, 6 (21%) invested the maximum amount.

What is the Sample that is used.