Leah was carrying out a hypothesis test to compare the proportion of
young drivers in a county who passed their driver's test on the first try
to the national proportion. A survey of 167 young drivers revealed that
the proportion who passed their driver's test on the first try was 0.56.
Calculate the test statistic for this hypothesis test, accurate to the
nearest hundredth, assuming that the national proportion of drivers
who passed their test on the first try was 0.5.