The answer is X>-7 for your question
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 value tested at the null hypothesis,
is the standard deviation(square roof of the variance) and n is the size of the sample.
In this problem, we have that:

So



The value of the test statistic is 
Answer:
Each of the remote angles shares one side with the angle adjacent to the exterior angle. The equation means that the sum of measures of the remote interior angles is equal to the measure of the exterior angle of the triangle.
The answer should be 7/8. simply just enlarge all of the fractions
their LCM is 40,
there fore, the question is 30/40, and the choices will be 20/40, 16/40, 25/40 and 35/40, there fore only 35/40 is larger than 30/40, so the answer is 7/8