Problem 29

Independence

h0: there is no relationship between party and sex ha: There is a difference between groups

Yes, random indpendent more than 5

p value = 0.08

We fail to reject the null, sicne p value is too big.

Problem 31

h0; party and region are indpende ha: Part and region are not independent

We assume indpenence between eggs and 5 expected people per a group.

x^2=4.81 p value = 0.008

We reject the null that region and party and independent, as there is a relatonship between the two.

Problem 33

Homogenity

h0: grade distibution is the same for both teachers ha: grades are different

We don’t expect 5 in each cell count.

Problem 35

Becuase the new cell expected values are above 5

Degrees of FREEDOM went DOWN to 3. SAD!

x^2=9.3 0.02=p value

There is a difference in grades.

Problem 41

x2=5.8 df=3 p=0.11

We fail to reject the null that here is a difference in pregnacies.