Many questions in research can be expressed as two competing statements about the population parameter. These two statements are called the null and the alternative hypotheses. Usually, the researcher hopes the sample evidence will be in favor of the alternative hypothesis, the new theory. It is important to be able to state the theories that are being put to a test. For each scenario below, write out the hypotheses to be put to the test and define the parameter of interest in context of the problem. 1. According to the World Bank, 10.7 percent of the world's population lived in poverty in 2013. Researchers wonder if this rate has changed since then (was the rate different in 2022 compared to 2013?). For this scenario, write out the hypotheses to be put to the test and define the parameter of interest in context of the problem. H0: Ha: The parameter p represents ___(provide appropriate definition in context)________
Many questions in research can be expressed as two competing statements about the population parameter. These two statements are called the null and the alternative hypotheses. Usually, the researcher hopes the sample evidence will be in favor of the alternative hypothesis, the new theory. It is important to be able to state the theories that are being put to a test.
For each scenario below, write out the hypotheses to be put to the test and define the parameter of interest in context of the problem.
1. According to the World Bank, 10.7 percent of the world's population lived in poverty in 2013. Researchers wonder if this rate has changed since then (was the rate different in 2022 compared to 2013?).
For this scenario, write out the hypotheses to be put to the test and define the parameter of interest in context of the problem.
H0:
Ha:
The parameter p represents ___(provide appropriate definition in context)________
2. Do a minority of Michigan residents clear snow from sidewalks before 9 am after snow has fallen?
For this scenario, write out the hypotheses to be put to the test and define the parameter of interest in context of the problem.
H0:
Ha:
The parameter p represents ___(provide appropriate definition in context)________
3. Suppose that 40% of all supermarkets in the US use recyclable plastic bags. We would like to assess if the proportion of supermarkets in Michigan that use recyclable plastic bags is more than the stated rate.
For this scenario, write out the hypotheses to be put to the test and define the parameter of interest in context of the problem.
H0:
Ha:
The parameter p represents ___(provide appropriate definition in context)________
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