Please match the following terms and descriptors (not all will be used):

Pitch is affected by…

Please match the following muscles to the functional descriptions when the muscles are contracted:

Match each anatomical feature with the corresponding letter. 

In the video you were assigned to watch for this exam, what is the Marriage Market like?  What do people do there?   

MAE 242, Online, – Fall25 – Midterm-II-6.pdf

 A company tests two versions of its mobile app to see which leads to more in-app purchases. Each user is randomly assigned to either Version A or Version B. In this A/B test, which of the following would be the dependent variable?

You conduct an A/B test to determine whether or not female influencers are paid more than male influencers on social media. With a confidence level of 0.05, you run a t-test and get a t-stat = 3.5345 and a p-value of 0.05.  What are the dependent and independent variables? What is the conclusion of the test?  You change the significance level to 0.01 and get a t-stat = 5.754 and a p-value  = 0.0002. What is the conclusion of your test?    

A high-end handbag designer is testing their latest handbag designs to improve sales. Version A features a slightly larger handbag, while Version B highlights a smaller-style handbags. The designer selects two groups V1 and V2 to run an A/B test. Group V1 rates the larger bag and group V2 rates the smaller style. You can consider the rating to be on a scale of 1-10. Assuming a significance level of 0.01. Define a clear null hypothesis and alternative hypothesis for this A/B test. Identify the independent variable and the dependent variable. Would the extraneous variables be addressed  if V1 and V2 were selected from outside of the U.S.? Justify your answer, Can you use a two-sample t-test assuming equal variances? Justify your answer. Under which conditions would you reject or fail to reject the null hypothesis? 

In a ggplot visualization, what is the primary purpose of using the aes() function?