Nursing MATH 225N Statistics Final EXAM
MATH 225N Statistics Final EXAM – Chamberlain College of Nursing MATH 225N Statistics Final EXAM 1/1 POINTS A fitness center claims that the mean amount of time that a person spends at the gym per visit is 33 minutes. Identify the null hypothesis, H0, and ...
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MATH -225n -FINAL EXAM Questions and Answers 100% correct/verified best Rated A+ Guaranteed latest update 2022 1/1 POINTS A fitness center claims that the mean amount of time that a person spends at the gym per visit is 33 minutes. Identify the null hypothesis, H0, and the alternative hypothesis, Ha, in terms of the parameter μ. That is correct! H0: μ≠33 ; Ha: μ=33 H0: μ=33 ; Ha: μ≠33 H0: μ≥33 ; Ha: μ<33 H0: μ≤33 ; Ha: μ>33 Answer Explanation Correct answer: Let the parameter μ be used to represent the mean. The null hypothesis is always stated with some form of equality: equal ( =), greater than or equal to (≥), or less than or equal to ( ≤). Therefore, in this case, the null hypothesis H0 is μ=33 . The alternative hypothesis is contradictory to the null hypothesis, so Ha is μ≠33 . H0: μ=33 ; Ha: μ≠33 • • • • QUESTION 2 1/1 POINTS The answer choices below represent different hypothesis tests. Which of the choices are right -tailed tests? Select all correct answers. That is correct! • H0:X≥17.1 , Ha:X<17.1 H0:X=14.4 , Ha:X≠14.4 H0:X≤3.8 , Ha:X>3.8 H0:X≤7.4 , Ha:X>7.4 • • • • H0:X=3.3 , Ha:X≠3.3 • Answer Explanation Correct answer: Remember the forms of the hypothesis tests. • Right -tailed: H0:X≤X0 , Ha:X>X0 . • Left-tailed: H0:X≥X0 , Ha:X<X0 . • Two-tailed: H0:X=X0 , Ha:X≠X0 . So in this case, the right-tailed tests are: • H0:X≤7.4 , Ha:X>7.4 • H0:X≤3.8 , Ha:X>3.8 QUESTION 3 H0:X≤3.8 , Ha:X>3.8 H0:X≤7.4 , Ha:X>7.4 0/1 POINTS Find the Type II error given that the null hypothesis, H0, is: a building inspector claims that no more than 15% of structures in the county were built without permits. That's not right. The building inspector thinks that no more than 15% of the structures in the county were built without permits when, in fact, no more than 15% of the structures really were built without permits. The building inspector thinks that more than 15% of the structures in the county were built without permits when, in fact, more than 15% of the structures really were built without permits. The building inspector thinks that more than 15% of the structures in the county were built without permits when, in fact, at most 15% of the structures were built without permits. The building inspector thinks that no more than 15% of the structures in the county were built without permits when, in fact, more than 15% of the structures were built without permits. Answer Explanation Correct answer:
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