According to the 2011 Population Reference Bureau's (PRB) Girl's Data Sheet, in Bangladesh there was a higher rate of illiteracy among males age 15-24 than females of that age. A humanitarian organization went to Bangladesh to conduct a random sample. The results revealed that in this age group, 45 out of 234 males and 42 out of 251 females were classified as illiterate on the same measurement test. Do these results indicate that the PRB findings were correct?

What is the z-score for the sample of these two proportions? (Round to 2 decimal places.)