# conf interval short question

• Jul 23rd 2010, 11:21 PM
samileo31
conf interval short question
• Jul 24th 2010, 07:35 PM
pickslides
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.
• Jul 24th 2010, 10:45 PM
samileo31
please 5th one also
• Jul 25th 2010, 03:02 AM
mr fantastic
Quote:

Originally Posted by samileo31
please 5th one also

Read what was said in post #2 about Q5.
• Jul 25th 2010, 10:24 PM
samileo31
i have only this information about the Q5