(1) ( points) Give the p-value for testing H0: with a z ...

It uses the p-value. If P>.05 retain the null and if P< .05 reject the null. The effect size tells us how strong the effect is, it tells us the size of the effect. Significance testing doesn't tell us this it only tells us whether or not there probably is a relationship. Effect size is the r value. ................
................