Hypothesis Testing

Question 1

What are the steps to a hypothesis test?

Answer 1

1. Define the null hypothesis (Ho) - It is always that the mean is equal to the current average (ALWAYS A NUMBER)
2. Establish the rumour (Alternative hypothesis (H1) - It is always that a mean is (when specified, if not it is equal to symbol
3. Look for evidence against the Ho (formula time)
4. Ask the chances (p)
   - look up z figure in normal table to find out its probability
5. Draw a conclusion if ‘p’ is smaller than 0.05 we reject.
   (rejecting means that the average has changed, and something does affect it)

Question 2

How do we know if the test is 2-tailed?

Answer 2

If the H1 (alternative hypothesis) is = to, we do it 2 tailed

Question 3

How do you conducted a 2-tailed test?

Answer 3

Its the same, just you have to x the probability before making a conclusion and it would be good if you could write:
P = 2 + P (Z ?) =

Question 4

What option on the calculator do you need to choose for SD?

Answer 4

4 - SX

Question 5

Where do you put the number that you use in your hypothesis?

Answer 5

On the RIGHT