Answer Happy

Public Libraries and Children A survey asked a random sample of n = 2752 US adults whether they had visited a public library in the last months. We see in that data that more females than males visit the library, but there is likely a confounding variable. The table below shows the survey results broken down by whether or not the participant is a parent of a minor. Find a 95% confidence interval for pc - Py the difference in proportion visiting the libary between those with children in the house and those without Yes No Total Children in house 421 411 832 No children in house 810 1110 1920 Total 1231 15212752 Table 1: Have you visited a public library in the last year! Round your answers to three decimal places The 95% confidence intervalis to