---
title: "S4R: Class 18, Hypothesis testing (two-sample)"
author: "Your Name Here"
date: "`r format(Sys.time(), '%B %d, %Y')`"
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.
* (1 p) Indicate the two variables,
their definitions (the questions from the codebook that defines their data), and
a `summary()` of each variable.
* (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.
* (2 p) State the conclusion in the context of the problem.
* (2 p) Provide an appropriate plot of the data and sample estimates in a well-labelled plot.
Turn in your project file with these answers in the Class 18 Section.
The sections from Erik's `S4R_Project_All_Erik_NESARC.Rmd` file to focus on are
* Class 18 Hypothesis Testing