Answer:
C
Step-by-step explanation:
That's the answer....
Answer:
The value of the test statistic is 
Step-by-step explanation:
The null hypothesis is:

The alternate hypotesis is:

Our test statistic is:

In which X is the sample mean,
is the null hypothesis value,
is the standard deviation and n is the size of the sample.
In this problem:

So



The value of the test statistic is 
To answer this question, you need to subtitute a number for each n. First find the first and then push off of there.