Ch 9 + 10 important vocab & concepts Flashcards
1
Q
Type 1 error
A
reject Ho even though it is true
2
Q
type 2 error
A
fail to reject Ho even though Ha is true
3
Q
Power?
A
1 - P(Type 2 error)
the probability a test will reject Ho when alternative is true
4
Q
two ways to increase power
A
increase sample size (decreases probability of a type 2 error)
increase alpha, but this increases probability of a type 1 error
5
Q
When to use pc hat?
A
significance tests for proportions that assume proportions are equal in comparing two populations
