7. In response to the statement "A preschool child is likely to suffer if his or her mother works," the response categories (Strongly agree, Agree, Disagree, Strongly disagree) had counts (91.385, 421. 99) for the 996 responses in the 1991 General Social Survey. With scoles (2.1,-1,-2) for the four categories, computer software reported the following results. N 996 Mean -.052 Std Dev 1.253 Std Err 0.0397

a) Set up null and alternative hypotheses to test whether the population mean response differs from the neutral value. 0.

b) Find the test statistic and P-value. Interpret.

c) Explain what this choice of scoring assumes about relative distances between levels of the scale.