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It used to be believed that congenital abnormalities affected about 5% of a certain nation’s children....

It used to be believed that congenital abnormalities affected about 5% of a certain nation’s children. Some believe that the increase in the number of chemicals in the environment has led to an increase in the incidence of abnormalities. A recent study examined 384 children and found that 46 of them showed signs of abnormality.

At a significance level of 1%, does the data provide sufficient evidence to conclude that the risk has increased? Then, compute the p-value for this test

Math   Statistics-And-Probability   
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