What proportion of a normal distribution is located in the tail beyond z = 1.50?

According to Erikson, if six-month-old Marcus could verbalize his dilemma, he would say that he is most likely struggling with the question,

a) Can I control my body? b) Can I trust the world? c) What is my purpose in life? d) What is my identity?

The technique of injecting chemical tracers into the auditory thalamus and

staining the brain tissue to see where those neurons project their axons was used by LeDoux to discover (a) that rats show conditioned fear (b) that rabbits show conditioned fear (c) which neurons throughout the body are involved in the fear response (d) the brain circuits involved in the fear response