Ho [Null hypothesis]

H1 [Alternative hypothesis]

Critical level

Level of significance

Upper-tailed, Lower-tailed, Two-tailed Tests

Steps of hypothesis testing (1)

Steps of hypothesis testing (2)

Steps of hypothesis testing (3)

decision rule depends of 3 factors ....
[Hint: Steps of hypothesis 1 and 2]

Steps of hypothesis testing (4)

Steps of hypothesis testing (5)

p-value, what is it and what is its significance?

Interpreting p-value
a) Reject Ho if p = or < α
b. Do not reject Ho if p > α

Type 1 Error (α)

Type 2 Error (β)

χ2 Test are based on -----

When do you use χ2 statistical test

a) In χ2 , what does K stands for?
b) how do you calculate the degree of freedom (df)?
c) how do you determine the critical value in χ2?

W/n χ2 , what does the lower- or upper-tailed tests stand for?

in χ2 , the rejection region is ALWAYS on the right upper-tail (Y or N)

α = P(Type 1 Error); assuming α = 0.005, what does that mean?