# Math Help - conf interval short question

1. ## conf interval short question

2. 1. The 3 ways to test a hypothesis is by finding the critical value, finding a p-value or finidng a cofidence interval. Is that what is meant by the question?

2. $1-\alpha$

3. Construct an interval and you will see it is the middle.

4. When $\sigma$ is unknown

5. I think you need more information to determine the null and alternate hypothesis here.

3. please 5th one also

4. Originally Posted by samileo31
please 5th one also
Read what was said in post #2 about Q5.

5. i have only this information about the Q5