Question

Neuroinvasive West Nile virus is a severe disease that affects a person's nervous system. It is spread by the Culex species of mosquito. In the United States in 2010 there were 629 reported cases of neuroinvasive West Nile virus out of a total 1,021 reported cases and there were 486 neuroinvasive reported cases out of a total of 712 cases reported in 2011. Is the 2011 proportion of neuroinvasive West Nile virus cases more than the 2010 proportion of neuroinvasive West Nile virus cases? Using a 1% level of significance, conduct an appropriate hypothesis test.

• "2011" subscript: 2011 group
• "2010" subscript: 2010 group

What type of test is this?

Answer 1

Null Hypothesis and it assumes the equality of attributes.

The attribute of study is the proportion

`P_(2011)` ≤
`P_(2010)`

Explanation: