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.
Select one:
a. z = 2.18b. z = -2.27c. z = 2.27d. z = -2.18