Blog

19. Choose the correct color word. green

43. dress

Which ribs are best visualized in the following position? (Click on one of the words)

Which ribs are best visualized in this position (RAO)? (Click on the answer)

Read each question or statement carefully. Select the option that best answers each question or completes each statement. 

A Cave Mystery About Homo Naledi1 | In 2013, scientists found bones from more than 20 ancient human relatives in the Rising Star Cave2 | system in South Africa. These relatives are called Homo naledi, they lived about 335,000 to 236,0003 | years ago. They were small, and their brains only about the size of a chimpanzee’s brain.4 | For years, scientists debated how the bones got so deep inside the caves. Some researchers5 | the individuals may have fallen in by accident, but others believed they were placed there6 | after death.7 | Researchers recently studied proteins from 23 teeth found in the cave system. The teeth came8 | from babies, children, and adults, so the sample included many ages. The researchers looked for9 | proteins in dental enamel, which is the hard outside part of a tooth. In humans, one protein is10 | connected to the X chromosome another is connected to the Y chromosome. Because males11 | usually have the Y-chromosome protein, so scientists can often use teeth to learn whether an12 | individual was male or female.13 | The surprising result was that every tooth sample seemed to come from a female. If this14 | happened by chance, it would be like flipping a coin many times and getting the same side every15 | time. That is incredibly unlikely, some scientists think the cave was probably used as a place for16 | the dead.17 | This idea is important because Homo naledi had a much smaller brain than modern humans. If18 | these early humans buried their dead, they may have had social behavior that was more complex19 | than many people expected. They may also have treated females in a special way after death, 20 | scientists still do not know why.21 | The study also raises a new question: where are the males? Male Homo naledi may be buried in22 | another cave scientists may already have found male fossils without recognizing them. If males23 | looked larger or different from females, researchers may have placed those fossils in the wrong24 | group.25 | For now, the discovery does not answer every question, but it changes how scientists think about26 | Homo naledi.

After completing this course, what would you say is the most important thing for a business professional to remember about marketing?

An allergic reaction that manifests as dry, itchy patches of skin that resemble rashes.

A social media website (e.g. Instagram) wants to know how many times its users post content each month. The company hires you to construct a frequency distribution showing monthly posts by users. The retailer suggests the set of classes below for your frequency distribution. Before you even begin to collect customer data on users posts, briefly explain the TWO most serious problems with the proposed set of classes for your frequency distribution.   Monthly Posts 0-5 5-10 10-15 15-20  

Laura listens to one of 3 different podcasts while exercising. Podcast A is 15 minutes long, podcast B lasts 30 minutes, and podcast C is 90 minutes. Last month Laura listened to podcast A 19 times, podcast B 4 times, and podcast C 2 times. Briefly explain why the two means you computed above (simple mean and weighted mean) are so different. Note: No computations are required for this part. I simply am asking you to explain why the weighted mean is higher, lower, or about the same as the unweighted mean podcast time.