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When a hypothesis is developed what is often designed to test the hypothesis?
An experiment
How do you decide whether to use a z test or a t test when testing a hypothesis about a population mean?
You use a z test when you are testing a hypothesis that is using proportions You use a t test when you are testing a hypothesis that is using means
What do you call the statement that determines if the null hypothesis is rejected?
The hypothesis test.
How can a scientist test a hypothesis if he or she cannot do a controlled experiment?
scientists test their hypothesis buy making observations or doing research
How is the critical region utilized in hypothesis testing?
When you formulate and test a statistical hypothesis, you compute a test statistic (a numerical value using a formula depending on the test). If the test statistic falls in the critical region, it leads us to reject our hypothesis. If it does not fall in the critical region, we do not reject our hypothesis. The critical region is a numerical interval.
Francesco Redi conducted an experiment to test the hypothesis that maggots arose spontaneous generation. what prediction did he make in designing his experiment?
The prediction that he made in designing his experiment was called the scientific method.
What was needhams manipulated variable?
Needham manipulated the presence of air in his experimental flasks to test his hypothesis about spontaneous generation of organisms.
What was Redi's hypotheses?
Francesco Redi's hypotheses centered around the concept of spontaneous generation—the idea that living organisms could arise from non-living matter. He proposed that maggots on decaying meat came from eggs laid by flies, rather than spontaneously generating from the meat itself. To test this, he conducted experiments using jars with meat, some open to the air and others covered, demonstrating that maggots only appeared in the open jars. His findings challenged the prevailing notion of spontaneous generation and laid the groundwork for modern biology.
Why do you think Redi repeated his experiment a second time under slightly different conditions?
Redi likely repeated his experiment under slightly different conditions to ensure the reliability and validity of his results. By varying the conditions, he could test the robustness of his conclusions regarding spontaneous generation and eliminate any potential variables that might have influenced the initial results. Additionally, repeating the experiment helps to confirm findings and address any skepticism from the scientific community. This rigorous approach enhances the credibility of his work and strengthens the overall argument against spontaneous generation.
What was Redi's experiment?
Francesco Redi's experiment in the 17th century involved placing meat in jars, some covered with gauze and some left open, to test the idea of spontaneous generation. He demonstrated that maggots did not spontaneously appear on the meat in the covered jars, disproving the prevailing theory at the time.
Why did nedhams experiment fail to disprove spontaneous generation for microbes?
Needham's experiment failed to disprove spontaneous generation for microbes because he did not adequately sterilize his broth before sealing the flasks. Although he heated the broth, the containers were not sealed in a way that prevented contamination from airborne microorganisms. As a result, microbial growth occurred, which he interpreted as evidence for spontaneous generation, rather than recognizing that existing microbes had entered the broth. This oversight highlighted the need for more rigorous experimental controls to test the hypothesis effectively.
Louis Pasteur's experiments brought to an end the theory of generation?
the answer is B the answer is wroung. just too the test and it's A spontaneous. for the Penn- Fosters test look on pages 142-143 good luck everybody
What process do scientists use to answer questions about the world for example Reids experiment with rotting meat?
Scientists use the scientific method, which involves making observations, forming a hypothesis, conducting experiments to test the hypothesis, analyzing the data, and drawing conclusions. In the case of Redi's experiment with rotting meat, Redi observed that maggots appeared on meat left out in the open, so he hypothesized that flies were responsible. He designed an experiment to test his hypothesis by covering the meat with a mesh to prevent flies from landing on it, which led to the conclusion that flies were indeed the source of the maggots.
What should you do after you form a hypothesis?
test your hypothesis.
Will you test positive on a redi test nicotine test if you are wearing patches?
will you test positive for oxycontin and opiates if you are taking both
Louis pasteurs experiments brought to an end the theory of what generation?
Louis Pasteur's experiments brought an end to the theory of spontaneous generation, which proposed that living organisms could arise from non-living matter. Pasteur's work demonstrated that microorganisms do not spontaneously generate but instead come from existing cells.
What did john needham conclude from test of redi's finding?
What_did_john_needham_conclude_from_his_test_of_redi%27s_findings
