If the population values are very close to each other, the width ...

[saraeharris]

If the population values are very close to each other, the width of the confidence interval is ___________________ _ than if the population values are very far apart.
 Fill in the blank(s) with correct word

Question 2

Some of the requirements for the error variable in a multiple regression model are that the probability distribution is ___________________ _ with a mean of ___________________ _.
 Fill in the blank(s) with correct word

[Ashley I]

Answer to Question 1

narrower
smaller

Answer to Question 2

normal; zero
normal; 0