Suppose that a study has been published linking arsenic, which is commonly found in tap water, to increased cancer rates. The study also stated that arsenic levels below 10 ppm could be considered harmless. Suppose that residents of Hacienda Heights, CA, are worried about the arsenic level in the local tap water.
a) What hypothesis should they test?
b) Describe a Type I and Type II error in this context.

Question

Suppose that a study has been published linking arsenic, which is commonly found in tap water, to increased cancer rates. The study also stated that arsenic levels below 10 ppm could be considered harmless. Suppose that residents of Hacienda Heights, CA, are worried about the arsenic level in the local tap water. 
a) What hypothesis should they test? 
b) Describe a Type I and Type II error in this context.

Quizplus · Accepted Answer

The Answer of Suppose that a study has been published linking arsenic, which is commonly found in tap water, to increased cancer rates. The study also stated that arsenic levels below 10 ppm could be considered harmless. Suppose that residents of Hacienda Heights, CA, are worried about the arsenic level in the local tap water. 
a) What hypothesis should they test? 
b) Describe a Type I and Type II error in this context.

Suppose That a Study Has Been Published Linking Arsenic, Which