Identifying H0and Hr in ex 5-12 , examine the given statement , then express the null hypothesis H0 and alternative hypothesis H1 in symbolic form.
Finding Critical Values. In Exercises 13-20 , find the critical z values. In each case ,assume that the normal distribution applies.
14. Two-tailed test: alpha = 0.01
16. Left-tailed test; alpha=0.05
The null and alternative hypothesis for critical values. A complete and neat solutions are provided.