---
title: "ADA1: HW 08 Hypothesis testing (one- and two-sample)"
author: anonymous
date: "10/13/2016"
output:
html_document:
toc: true
---
# Rubric
1. Using a numerical response variable and a two-level categorical variable (or a categorical variable you can reduce to two levels),
specify a two-sample $t$-test associated with your research questions.
* (2 p) Specify the hypotheses in words and notation (either one- or two-sided test),
* (0 p) use `t.test()` to calculate the mean, test statistic, and p-value,
* (3 p) state the significance level, test statistic, and p-value, and
* (2 p) state the conclusion in the context of the problem.
* (1 p) Given your conclusion, could you have committed at Type-I or Type-II error?
* (2 p) Provide an appropriate plot of the data and sample estimates in a well-labelled plot.
Turn in your master HW file with these sections appended to the bottom.