A) In 1997, a survey of 820 households showed that 137 of them
use e-mail. Use those sample results to test the claim that more
than 15% of households use e-mail. Use a 0.05 significance level.
Use this information to answer the following questions.
What is the P-value?
B) In a study of 420,149 cell phone users, 115 subjects
developed cancer of the brain or nervous system. Test the claim of
a somewhat common belief that such cancers are affected...