observed amount of puppies in a litter Proportions based on

observed amount of puppies in a litter

Proportions based on national averages or puppies in a litter

What are the expected numbers based on the national proportions, and how do you arrive at them?

What is the chi2 value?

Solution

expected numbers = 40 + 40 +24 +24 = 128 /4 = 32

X^2 = (24-32)^2 / 32 + (40-32)^2 / 32 + (40-32)^2 / 32 + (24-32)^2 / 32

X^2 = 2 + 2 +2 +2 = 8