Question 1045260
Ho: > or = to half of all teenagers feel grades are the greatest source of pressure.
Ha: < than half of all teenagers feel this way.
alpha is 0.05, one tail test.

Test statistic is a one sample proportion: z=(phat-0.5)/sqrt {(0.5)(0.5)/1017}  phat-p=-0.09; SE=0.0157
Critical value is z=<-1.645
z=-5.74
Strongly reject Ho with p<<0.0001
There is sufficient evidence to reject the null hypothesis.  A