You are interested in testing whether students who complete a take-home exam early in the day (i.e., before noon) get higher test scores than students who wait until the last hour. You gather the data, compare test scores, and get a p-value of 0.04 (with on-average higher scores for students who take the exam earlier). What can you conclude? Select all that apply. 

Which set of code produces the following figure? 

How are visualizations helpful? Select all that apply.

An AB test tells us if:

Nutrient requirements are dependent upon a pet’s __________  __________.

1 ounce (oz) is how many grams?

Identify the correct combination of code and figure. Note that the code is identical in each answer, only the figures differ!  

In R script, “position = dodge” does which of the following?

1 gram (g) is how many milligrams (mg)?

You are conducting an A/B test to evaluate the effectiveness of two different landing page designs for a website. Visitors to the site are randomly assigned to either version A or version B of the landing page. The primary metric for success is the conversion rate, or the percentage of visitors who take a desired action on the page. After collecting data for a month, you analyze the results to determine which version performed better. Which of the following statements is true regarding the analysis of an A/B test?