(6) hypotheses testing

Question 1

What is a critical region?

Answer 1

-a region in which if the test statistic falls in the null hypotheses can be rejected.

Question 2

What are the steps for a hypotheses test?

Answer 2

step 1 -identify if it is a one-tailed or two tailed test
step 2- define test statistic/ define variables.

step 3- formulate a model for test statistics (n,p)

step 4- assume h0 is true and work out the probability for the test statistic.

step 5- see whether or not it lies in significance level.

Question 3

How do you find the actual significance level?

Answer 3

-add up/ state the values of both that lie within the significance level

Question 4

How could you comment on the validity of a hypotheses test if a group of scouts went into the shop?

Answer 4

-The events are not independent and therefore do not fit the model.

Question 5

What is the difference between a one tailed and two tailed?

Answer 5

-For a two tailed divide significance level by 2.

Question 6

How do you work out the critical region for a test?

Answer 6

• Identify if it is one or two tailed.
• Then use table function to see the different probability.
• note calculator does (p

Question 7

What is critical region?

Answer 7

-Region of probability distribution that test statistic falls within, h0 will be rejected.

Question 8

What is critical value?

Answer 8

-First critical value to fall in the acceptance region.

Question 9

What is the actual significance level of hypothesis test?

Answer 9

-The probability of incorrectly rejecting h0

Question 10

How can you calculate the probability of incorrectly h0?

Answer 10

-add the actual significance levels.

Question 11

What is test statistic?

Answer 11

-is what is observed.

Question 12

What are the steps in a normal hypothesis test?

Answer 12

-Step 1 one tailed or two tailed 
step 2 - define variable 
step 3 - create model 
step 4- state hypothesis 
step 5- work out test statistic 
step 6- compare to sig level
-step 7- in context.