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 Successes Observations Proportion Confidence level Z-score p-value Library B 41 Successes 100 Observations 0.410 Proportion 95% 0.6717 0.2514 68 150 0.453 Library A patrons: nA = Ex: 9 Library B patrons: nB = Sample proportion for library A patrons: A = Ex: 1.234 Sample proportion for library B patrons: Â Â -3 -2 -1 0 1 p= Ex: 1.234 2 3 z = Ex: 1.234