In 3-4 sentences, explain the difference between a null hypothesis and an alternate hypothesis. Then, give an example of each--in other words, make up a null hypothesis and an alternate hypothesis for a hypothetical experiment.
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In 3-4 sentences, explain the difference between a null hypothesis and an alternate hypothesis. Then, give an example of each--in other words, make up a null hypothesis and an alternate hypothesis for a hypothetical experiment.
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- What is a null hypothesis in experiments? How is a null hypothesis used in science experiments? Note: Provide an answer with 150-200 wordsa. What was the purpose of the Griffith’s experiment? (What question was asked?) b. Briefly explain the roles of Streptococcus pneumoniae and mice (mouse) in the experimental design. To answer this question, be sure that you address the independent variables.and dependent variables. If you wish, you can sketch a labeled figure to support your answer. c. Write a complete null hypothesis for his experiment.You are asked to draw and explain the goal of the Meselson-Stahl (1958) Experiment as outlined in the classroom. You need to draw your own diagram and use short sentences to explain the steps and/or important points, deductions. Clearly state what happens at each step.
- Compare and contrast random and systematic experimental errors with specific examples either real or fictitious. Explain how these types of errors can be identified and reduced in an experiment.Assume that a Chi-square test was conducted to test the goodness of fit to a 3:1 ratio and that a Chi-square value of 2.62 was obtained (Table value is equal to 3.84). Should the null hypothesis be accepted? How many degrees of freedom would be associated with this test of significance?What is the difference between an independent and dependent variable. Provide an example of each from a hypothetical experiment.
- 1) Chi-square analysis generates a p value, an important indicator of statistical support for a hypothetical outcome. If a p value = 0.05 > p > 0.01, the tested hypothesis fails to be falsified. Agree/Disagree? Answer with explanation here:A well-designed experiment will contain both positive and negative controls. Which of the following is a false statement? Choose one from the following: (A) a positive control experiment is missing some of the components of the experiment and should give a negative result (B) a positive control experiment contains all of the components of an experiment and should give a positive result (C) a negative control experiment is missing the element being tested and should give a negative result (D) if there are multiple components of an experiment, there should be multiple negative controls (E) if a negative control experiment give positives results, it is likely that the experiment is contaminatedHow can evidence from an experiment be explained in relationship to the hypothesis?