Tasks

1. Write a function

Write a function with the inputs data (a vector of the observed data), null (null value), alternative (the alternative hypothesis, options: less than, greater than, not equal to), success (level of the categorical variable to be considered a success), seed (the seed to be set). As an output, the function should report the null hypothesis, the alternative hypothesis, a summary of the dataset, the observed sample statistic, the p-value, and the simulated null distribution.

2. Test your function

Confirm that your function is working properly using the earlier dataset/hypothesis test on livery donor surgery complications.

3. Conduct inference with your function

One of the earliest examples of behavioral asymmetry is a preference in humans for turning the head to the right, rather than to the left, during the final weeks of gestation and for the first 6 months after birth.This is thought to influence subsequent development of perceptual and motor preferences. A study of 124 couples found that 64.5% turned their heads to the right when kissing. Do these data provide convincing evidence that majority of couples turn their heads to the right when kissing? Use the function you created earlier to conduct the appropriate hypothesis test. You can download the dataset at https://stat.duke.edu/~mc301/data/kissing.html.

Submission instructions

Your submission should be an R Markdown file in your (new) team App Ex repo, in a folder called AppEx_07.

Due date

Thursday, Oct 22, begginning of class

Watch out for…

… merge conflics on GitHub – you’re working in the same repo!

Issues will arise, and that’s fine! Commit and push often, and ask questions when stuck.