Chapter 4.1, Problem 14E

a.

To determine

Identify whether the set of hypotheses $H_0:\mu =15\text{ vs }{H}_a:\mu \ne 15$ is valid.

b.

To determine

Identify whether the set of hypotheses $H_0:p\ne 0.5\text{ vs }{H}_a:p=0.5$ is valid.

c.

To determine

Identify whether the set of hypotheses $H_0:p_1<p_2\text{ vs }{H}_a:p_1>p_2$ is valid.

d.

To determine

Identify whether the set of hypotheses $H_0:{\overline{x}}_1={\overline{x}}_2\text{ vs }{H}_a:{\overline{x}}_1\ne {\overline{x}}_2$ is valid.