When doing hypothesis testing in the real world • A. the researcher knows when the effects...
When doing hypothesis testing in the real world • A. the researcher knows when the effects are real, but does not know when they are not real. • B. the researcher rarely knows the population parameters • C. the researcher knows when he or she has made a Type I error. • D. the researcher knows when he or she has made a Type II error.
Homework Answers
For doing the hypothesis testing in the real world under a given level of significance the researcher can know the probability of making a type I or type I error but not know when they have made it.
in the real world they rarely know the population parameters because the population concerned is very large and it is nearly impossible to sample the whole population.
So option B is correct.
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When doing hypothesis testing in the real world • A. the
researcher knows when the effects...
In hypothesis testing, if the null hypothesis has NOT been rejected when the alternative hypothesis is...
In hypothesis testing, if the null hypothesis has NOT been rejected when the alternative hypothesis is true, a. a Type II error has been committed b. a Type I error has been committed c. the correct decision has been made d. either a Type I or Type II error has been committed
A researcher claims that 45% of students drop out of college. She conducts a hypothesis test...
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The term "error" is used two different ways in hypothesis testing: 1) Type I error (or...
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1. In testing hypotheses, the researcher initially assumes that the alternative hypothesis is true and uses the sample d...
1. In testing hypotheses, the researcher initially assumes that the alternative hypothesis is true and uses the sample data to reject it. True False 2. The first step in testing a hypothesis is to establish a true null hypothesis and a false alternative hypothesis. True False 6. The power curve provides the probability of Correctly accepting the null hypothesis Incorrectly accepting the null hypothesis Correctly rejecting the alternative hypothesis Correctly rejecting the null hypothesis 7. Suppose that Ho: μ ≤...
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You are testing the null hypothesis µ=150 versus the two tailed alternative. You reject the null...
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1) After a scientist conducts research and reaches a conclusion about the null hypothesis, is there...
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ESAND ABUSES 1 Uses Hypothesis Testing Hypothesis testing is important in many different fields because it gives a scientific procedure for assessing the validity of a claim about a population. Some...
ESAND ABUSES 1 Uses Hypothesis Testing Hypothesis testing is important in many different fields because it gives a scientific procedure for assessing the validity of a claim about a population. Some of the concepts in hypothesis testing are intuitive, but some are not. For instance, the American Journal of Clinical Nutrition suggests that eating dark chocolate can help prevent heart disease. A random sample of healthy volunteers were assigned to eat 3.5 ounces of dark chocolate each day for 15...
If in reality (i.e., nature) the null is true, but the research rejects the null hypothesis,...
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ESAND ABUSES 1 Uses Hypothesis Testing Hypothesis testing is important in many different fields because it gives a scientific procedure for assessing the validity of a claim about a population. Some of the concepts in hypothesis testing are intuitive, but some are not. For instance, the American Journal of Clinical Nutrition suggests that eating dark chocolate can help prevent heart disease. A random sample of healthy volunteers were assigned to eat 3.5 ounces of dark chocolate each day for 15...
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