Write the two hypotheses and find the pvalue.

Question

1. The Centers for Disease Control and Prevention reported a survey of randomly selected Americans age 65 and older, which found that 535 of 1068 women and 421 of 1012 men suffered from some form of arthritis. Is this evidence that women are more likely to suffer from arthritis then men? Test an appropriate hypothesis using a significance level of 0.10 (? = 0.10). You can assume all conditions and assumptions are met.

Answer 1

Okay, so the null hypothesis (H0) always amounts to saying "There is no difference between the two groups with regard to X".  The alternative hypothesis (H1) always amounts to saying "There IS a difference between the two groups with regard to X."

 

 

Just add the specifics - difference about what, between what groups.  

 

If the subject was cats and dogs and prevalence of fleas, the hypotheses might be 

 

H0 = There is no difference between the sample populations of dogs and cats with regard to the incidence of fleas.

 

H1 = There is a statistically significant difference between the sample populations of dogs and cats with regard to the incidence of fleas.

 

 

 

You can calculate the p value using this site - http://www.socscistatistics.com/tests/ztest/Default2.aspx