Question

students spend on their phones. Does this confidence interval support your conclusion from the hypothesis test in part (d)? Why or why not? 9. In 2002, not long after the Enron accounting scandal, 508 American adults interviewed by the Gallup Poll were asked, "Do you think corporate corruption has gotten worse in the past few years, or has it always been like this?" Of the surveyed adults, 239 of them answered that they did think corporate corruption has indeed gotten worse. Construct and interpret a 90% confidence interval for p, the population proportion of American adults who, in 2002, believed that corporate corruption has gotten worse.

Answer 1

The solution is described below

Sol Amatican Adulh intehwieweat y dhe halhp Numbeh 7 aare 508 Pou Coyoed hatythink adulh No annweruol CoTuptin han indeeo got wotne 239 P Propontian aolda t dhy tnk corporate 293 508 O.47 CoTruptionhn goth usome= -P 0.$3 2 = ha significm vaba Z a .64 m Normal dal Thafoha th a mfidan limtfoh populatin port a 90 Confidene Coticie 0471 64/0.4x 0.53/508 : 0.47 t0.02 x 1.64 0 03 (o.44050) American Aou toto Hene the perundnge beliena ttat corpo eompion ha goten worae Lien almo cahtanly betuen 44 and 50