Question 915809
Ho: p ≤  0.3
Ha: p > 0.3 (claim)
test stat: z = 1.41
.10 significance level, one-tailed
critical value = z = invNorm(.90) = 1.2845
P(z > 1.2845)...(area under the standard normal curve to the right of blue line represents the critical area)
1.41 > 1.28, reject Ho, accept claim
{{{drawing(400,200,-5,5,-.5,1.5, graph(400,200,-5,5,-.5,1.5, 0,exp(-x^2/2)), blue(line( 1.2845,0, 1.2845,exp(-1.2845^2/2))),locate(4.8,-.01,z),locate(4.8,.2,z),locate(.4,-.02,.8))}}}