Question 1176453
Point estimate is p hat=525/1595=0.32915
Ho: p<=0.30
Ha: p>0.30
alpha=0.01 p{reject Ho|Ho true}
test statistic is a z
critical value is z>2.326
z=(p hat-p)/sqrt(p*(1-p)/n)
=0.02915/sqrt( (0.3*0.7/1595); sqrt term =0.01147
z=2.54
reject Ho
p-value z>2.540 which is 0.0055.