A psychologist conducted a survey of the attitude towards the sustainability of American energy consumption with 100 randomly selected individuals several years ago. The psychologist believes that these attitudes have changed over time. To test this he randomly selects 100 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? a. The observed data is the 2nd survey, the expected data is the 1st survey (used for comparison). Attitude 1st Survey 2nd Survey Optimistic 40 42 Slightly Optimistic 25 33 Slightly Pessimistic 24 15 Pessimistic 11 10 b. State the null and the alternate hypotheses. c. State the degrees of freedom and the critical value – use the chi-square chart and a 0.05 level of significance. d. Use your calculator to determine the test statistic. e. Conclude the test by comparing the test statistic and the critical value. f. What does this mean about people’s attitudes about the sustainability of energy consumption?