A city council is trying to determine if library B, with extended hours, has a higher proportion of patrons under the age of 18 than library A, which closes at 6:00 pm. A random sample of patrons from both libraries are checked. The results of the data collected are shown below. Library A Library B Successes 41 Successes 68 Observations 100 Observations 150 Proportion 0.410 Proportion 0.453 Confidence level 95% P= Ex: 1.234 + z-score 0.6717 p-value 0.2514 -3 -2 -1 0 z = Ex: 1.234 Library A patrons: nA = Ex: 9 Library B patrons: nB = Sample proportion for library A patrons: P A = Ex: 1.234 Sample proportion for library B patrons: P B =