Question 1175577
Ho=same proportion
Ha=different
alpha =0.01 p{reject Ho|Ho true}
test is a z, numerator is 0.07 from data
overall sample proportion is 1557/2684, 289/566 so it is 1846/3240=0.57
denominator is sqrt(0.57*0.43)(1/2684)+(1/566))
=0.0229
z=3.06, and the critical value is |z|>2.576, so reject Ho.
p-value=0.0022