Answer:
The correct options are:
1. Option C
2. Option B
Explanation:[tex]H_0[/tex]
is the null hypothesis, it is usually the opposite of
[tex]H_a[/tex]
which is the alternative hypothesis.
From the given options, we have:
[tex]H_0\colon\mu=53\text{ hours}[/tex]
The null hypothesis is usually a statement of equality
And
[tex]H_a\colon\mu\ne53\text{ hours}[/tex]
The alternative hypothesis is usually the opposite of the null hypothesis
