Hypothesis Testing

Question 1

Null Hypothesis

Answer 1

H0, what we assume to be true

Question 2

Alternative Hypothesis

Answer 2

H1, what would be true if H0 is wrong

Question 3

Significance level

Answer 3

The given threshold of likeliness

Question 4

One tailed test

Answer 4

When H1: p> k or P < k

Question 5

Two tailed test.

Answer 5

When H1: p != k -> halve significance level for each enf.

Question 6

Correlation hypothesis test

Answer 6

H0: p = 0
H1: p>0 or p<0 or p != 0
Compare your r with table
If your r is more extreme, reject H0
If your r is less extreme, no evidence to reject H0
REMEMBER CONTEXT

Question 7

Binomial hypothesis test

Answer 7

Test statistic: number of successes observed.
H0: p = k
H1: p>k or p< k or P != l
Assume H0 i.e X varies B(n, k)
Find P(X >= or <= value in question) and more extreme

If P less than significance value, reject H0
If P greater than significance value, no evidence to reject H0
REMEMBER context