An article in a journal reports that 34% of American fathers take no responsibility for child care. A researcher claims that the figure is higher for...

An article in a journal reports that 34% of American fathers take no responsibility for child care. A researcher claims that the figure is higher for fathers in the town of Littleton. A random sample of 234 fathers from Littleton yielded 96 who did not help with child care. Test the researcher's claim at the 0.05 significance level.  Calculate the test statistic z.