In a survey conducted by Wright State University, senior high school students were asked if they had ever used marijuana. Table 7.12 shows software output. Treating these observations as a random sample from the population of interest:

(a) State a research question that could be addressed with this output.

(b) Interpret the reported confidence interval.

(c) Interpret the reported P-value. TABLE 7.12 Sample yes Sample prop 1. Female 445 1120 0.3973 2. Male 516 1166 0.4455 estinate for p(1) p(2): -0.0482 95% CI for p(1) p(2): (-0.0887, -0.0077) Test for difference 0 (vs not = 0): z=-2.33 P-value - 0.020