Answer:
(a)
(b)
(c) Fail to reject
Step-by-step explanation:
Given
Solving (a): The test statistic
This is calculated as:
So, we have:
--- approximated
Solving (b): Range of p value
First, calculate the degree of freedom (df)
Using:
--- significance level
The p value at: is:
and the range is:
Solving (c): The conclusion
Compare the p value to the level of significance value
We have:
By comparison:
because:
<em>Hence, the conclusion is: fail to reject </em><em></em>