A psychologist conducted a survey of the attitude towards the
sustainability of American energy consumption with 230 randomly
selected individuals several years ago. The psychologist believes
that these attitudes have changed over time. To test this he
randomly selects 230 individuals and asks them the same questions.
Can the psychologist confirm his theory that the attitudes have
changed from the first survey to the second survey? Attitude 1st
Survey 2nd Survey Optimistic 35% ,38% Slightly Optimistic 12% ,14%
Slightly Pessimistic...