This is how the MacConkey agar plate looks after 24 hours of incubation. Are these bacteria positive or negative for lactose fermentation?    

The owner of a website wanted to know if more people would subscribe to his website if using a black vs. a blue background in the messages that ask consumers to subscribe. He conducted an AB test with the exact pictures below and found that the picture on the right drives a higher click-through rate compared to the picture on the left. He asked you to look at his AB test and conclude about the initial question he had. What would you say?

USA Today wants to know if using a curvy-shaped call-to-action button like the one at the left of the picture below (vs. a rectangular-shaped button like the one at the right of the picture below) would be more effective in increasing subscriptions to the website. Hence, the managers of USA Today decided to run an AB test (A method for CONVERSION RATE OPTIMIZATION).    After running the AB test, they noticed that about 1500 visitors saw the ad with the curvy-shaped button and from those who saw the ad, 500 decided to subscribe. In contrast, they noticed that about 1200 visitors saw the ad with the rectangular button, and from those who saw the ad, 400 subscribed. Hence, from this test we could say that:

One of these is not necessarily a key aspect that needs to be included in an email to avoid being flagged as spam:

Welcome to your final exam! Please take it with calm and take your time to read the questions and follow your thinking process.  Don’t rush to submit. Remember that notes, any device different than your computer, or standing while taking the exam is not allowed (Please don’t do this).

Given the importance of keywords for SEO strategies, one strategy that could potentially increase a page’s ranking on Google would be to include many keywords or use a keyword too many times within a page to make it seem more relevant, even when this is not directly related to the content. This would be a:

In the context of mobile marketing, how can the use of beacons in retail settings enhance content and communication delivery to consumers through mobile marketing?

If your website has a mobile version, what are some of the keywords that you could include to make sure that your website ranks on Google?

When buying using a cellphone, which of these products would be more likely to get purchased?

When crafting an online ad strategy, how could the selection of keywords contribute to a problem known as ad safety if not done properly?