This is clearer. It's a two sided test of a difference of binomial probabilities.
_s=p_m" alt="H_0_s=p_m" /> vs. _s\ne p_m" alt="H_a_s\ne p_m" />
Rejection region is
Test stat is
Where and .
Likewise and .
When does this stuff get easier??
A random sample of 400 policies written on single persons revealed 120 had at least one accident in the previous three year period. Similarly, a sample of 600 policies written on married persons revealed that 150 had been in at least one accident. At the .05 significance level, is there a significant difference in the proportions of single and married persons having an accident during a three-year period?
This is clearer. It's a two sided test of a difference of binomial probabilities.
_s=p_m" alt="H_0_s=p_m" /> vs. _s\ne p_m" alt="H_a_s\ne p_m" />
Rejection region is
Test stat is
Where and .
Likewise and .