In the 1980"s it was believed that congenital abnormalities aected about 5% of the nation"s children. Some people believe that an increase in the chemicals in the environment has led to an increase in the number of abnormalities. A recent study examined 384 randomly selected children and found that 23 of them showed signs of an abnormality. Does this provide evidence that the risk of congenital abnormalities has increase? Use = 0.05 to make your decision.

1.2) What would be the standard error for this problem?

A) 0.06248

B) 23

C) 0.03574

D) 0.011122