13.6.2 Test (CST): Classical Era Civilizations and World Religions Question 11 of 20 Which of the following best illustrates an achievement of classical Indian science? O A. A teacher demonstrates that gravity acts on all objects equally. OB. A Daoist priest teaches a class on stress and relaxation at a local college O C. An astronomer demonstrates that Earth moves in relation to the Sun. O D. A citizen of the United States elects representatives to make decisions. SUBMIT PREVIOUS

Among the choices the one that best illustrates an achievement of classical Indian science is C, an astronomer demonstrates that earth moves in relation to the sun. Indian astronomy has a long history extending from pre-notable to current circumstances. A portion of the most punctual foundations of Indian cosmology can be dated to the time of Indus Valley Civilization or prior.

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it broke up the ottoman empire (just a small fact) and the turkish leaders lost many soldiers.

a hypothesis is an expected answer to a question, usually based on some theory or prior research. hypothesis testing is a method of determining the viability of a hypothesis. let’s use the us presidential election as an example. there are many hypotheses (questions) about how people feel or whom they will vote for. the only way to know the 100% “truth” about the answers to these questions is to ask every single possible voter – something that is impossible, expensive, time consuming etc. instead, we take samples and use statistics to make “best guesses” about the answer to a particular hypothesis. we never know for sure if our conclusion is right at the time we accept/reject it, but these techniques, when used appropriately can get us close to the truth most of the time (which is a lot better than guessing, flipping coins or throwing darts to get answers).

the tricky part about hypothesis testing is that we have to think somewhat backwards about it – we have to test what is known as the “null hypothesis”. as an example, the hypothesis might be “obama is more popular than romney” while the null hypothesis is “there is no difference in popularity between obama and romney”. we focus on the null hypothesis because it tells us exactly what the expected value of our tests should be (obama popularity = romney popularity) and we can collect data and see if it comes out that way (see next section on “significance”). if it does, then we “accept the null hypothesis” and reject our original hypothesis. if the null hypothesis is disproven, we look at the data to see if our original hypothesis holds (obama> romney).