T-test (A.1.9)

Question 1

State when it would be appropriate to use a student t test stats analysis. Give a couple of examples

Answer 1

When trying to find if there is a significant difference between two sets of data

Question 2

State how you would correctly write a hypothesis for the student t test

Answer 2

There would be a null and alternative hypothesis.
NULL= there is no significant difference between… and…
ALTERNATIVE= there is a significant difference between… and…

Question 3

State how you would select the correct critical value to compare to in an unpaired student t test

Answer 3

With the given significance is decided/given take 1 away from the number of categories of data present to find the degrees of freedom. Here there will be the critical value

Question 4

4) State how you would write a conclusion to a student t test if:
a)the result was significant
b)b) the result was insignificant

Answer 4

A)