Suppose you hear an "old-timer" say, "Why, in my day, kids were much more respectful and didn't...

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Suppose you hear an "old-timer" say, "Why, in my day, kids were much more respectful and didn't cause as much trouble as they do nowadays!" Formulate a hypothesis related to this statement that you could test. How would you test it?

2. Researchers routinely choose an ?-level of 0.05 for testing their hypotheses. What are some experiments for which you might want a lower ?-level (e.g., 0.01)? What are some situations in which you might accept a higher level (e.g., 0.1)?

3. How large would your population have to be for a sample to be appropriate (i.e., rather than measuring the whole population)?

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DQ Suppose you hear an "old-timer" say, "Why, in my day, kids were much more respectful and didn't cause as much trouble as they do nowadays!" Formulate a hypothesis related to this statement that you could test. How would you test it? 2. Researchers routinely choose an ?-level of 0.05 for testing their hypotheses. What are some experiments for which you might want a lower ?-level (e.g., 0.01)? What are some situations in which you might accept a higher level (e.g., 0.1)? 3. How large would your population have to be for a sample to be appropriate (i.e., rather than measuring the whole population)?

DQ 1. Suppose you hear an "old-timer" say, "Why, in my day, kids were much more respectful and didn't cause as much trouble as they do nowadays!" Formulate a hypothesis related to this statement that you could test. How would you test it? 2. Researchers routinely choose an ◊-level of 0.05 for testing their hypotheses. What are some experiments for which you might want a lower ◊-level (e.g., 0.01)? What are some situations in which you might accept a higher level (e.g., 0.1)? 3. How large would your population have to be for a sample to be appropriate (i.e., rather than measuring the whole population)?

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David · Accepted Answer

DQ
1. Suppose you hear an "old-timer" say, "Why, in my day, kids were much more respectful and didn't cause as much trouble as they do nowadays!" Formulate a hypothesis related to this statement that you could test. How would you test it? 
We can choose a group of parents and their kids as the sample set. A set of questions with respect to respect shown, behavior towards elders under specific circumstances can be formulated and put to the group. Then their responses can be collected and the following hypothesis can be done( assuming that the responses were provided on a scale of 1 to 5 where each level - 0,1,2,3,4, 5 corresponds to some given behavioral response.  )
Ho: there are no differences in responses of both groups-parents and kids
H1:  there are differences in responses of both groups-parents and kids
A standard z-test for differences can be used.  
2. Researchers routinely choose an ◊-level of 0.05 for testing their hypotheses. What are some experiments for which you might want a lower ◊-level (e.g., 0.01)?

Suppose you hear an "old-timer" say, "Why, in my day, kids were much more respectful and didn't cause as much trouble as they do nowadays!" Formulate a hypothesis related to this statement that you...

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