Which of the following statements correctly describes the relationship between the null hypothesis
(H_(0))
and the alternative hypothesis
(H_(a))
in hypothesis testing? Select one: a. The alternative hypothesis always includes a symbol with an equal sign, such as
=,<=
, or
>=
. b. The alternative hypothesis states that there is no difference or effect between variables. c. The null hypothesis always includes a symbol with an equal sign, such as
=,<=
, or
>=
. d. The null hypothesis always includes a symbol of inequality such as
**,<
, or > .