200
Which of the following hypotheses is a null hypothesis?
a. There is no difference in the monthly grocery bills of families with one child and families with two children
b. Grocery bills vary according to the number of meals eaten outside the home.
c. Families with two children have significantly higher grocery bills than families with just one child.
d. There is a relationship between grocery bills and the number of people in a household.
There is no difference in the monthly grocery bills of families with one child and families with two children