1.) A statistics instructor overhears students talking about paying Smarty Pants Tutoring to help them improve their ACT scores. She tells them that students almost always get a better score the second time, so she isn't sure that paying for study help is worthwhile. She samples 20 students who've used Smarty Pants to compare their second scores after help to their first scores. She then compares their improvement of that to a second group of 20 students who took the ACT twice but without any paid study assistance in between. which procedure should be used?

a.)Two-sample T-Interval for means

b.) No inference required

2.) Since Wyoming was the first state to grant women the right to vote and Montana was the first state to elect a woman to congress, you hypothesize that states west of the Mississippi have elected more women to the US Congress than those east of the Mississippi.which procedure should be used?

a.) T-test for the difference in matched pairs (paired data)

b.) No inference required