Bundle > Chamberlain College of Nursing MATH225N WEEK 1-8 and Statistic Final Questions and Answers 100% Correct All Graded A

MATH 225N Week 8 Final Exam Question 1 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, an... d 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: H0: μ=33; Ha: μ≠33 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. Question 2 1/1 points The answer choices below represent different hypothesis tests. Which of the choices are righttailed 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: H0:X≤3.8, Ha:X>3.8 H0:X≤7.4, Ha:X>7.4 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 1/1 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 is correct! 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: 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. A Type II error is the decision not to reject the null hypothesis when, in fact, it is false. In this case, the Type II error is when the building inspector thinks that no more than 15% of the structures were built without permits when, in fact, more than 15% of the structures were built without permits. Question 4 1/1 points Suppose a chef claims that her meatball weight is less than 4 ounces, on average. Several of her customers do not believe her, so the chef decides to do a hypothesis test, at a 10% significance level, to persuade them. She cooks 14 meatballs. The mean weight of the sample meatballs is 3.7 ounces. The chef knows from experience that the standard deviation for her meatball weight is 0.5 ounces. H0: μ≥4; Ha: μ<4 α=0.1 (significance level) What is the test statistic (z-score) of this one-mean hypothesis test, rounded to two decimal places? That is correct! Test statistic = minus 2 point 2 4$$ Test statistic = minus 2 point 2 4 - correct Answer Explanation Correct answers: Test statistic = minus 2 point 2 4 $\text{Test statistic = }-2.24$ [Show More]

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Statistics> QUESTIONS & ANSWERS > Chamberlain College of Nursing Week 2 Math 225n Statistics Quiz Latest Updated Rated A (All)

Question 1 A company has developed a wristband for monitoring blood sugar levels without requiring direct blood samples. It is interested in demonstrating the accuracy of the device for governmental...

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Statistics> QUESTIONS & ANSWERS > Chamberlain College of Nursing Week 4 Math 225N Statistics Quiz Already Passed (All)

Week 4 quiz Question 1 Alice sells boxes of candy at the baseball game and wants to know the mean number of boxes she sells. The numbers for the games so far are listed below. 16,14,14,21,15 Find...

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Statistics> QUESTIONS & ANSWERS > Chamberlain College of Nursing Week 6 Math 225N Statistics Quiz Latest 2022 (All)

Week 6 Quiz Question 1 A statistics professor recently graded final exams for students in her introductory statistics course. In a review of her grading, she found the mean score out of 100 points...

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Statistics> QUESTIONS & ANSWERS > Chamberlain College of Nursing Week 3 Math 225N Statistics Quiz Latest 2022 (All)

Week 3 Distribution Shape If the median of a data set is 13 and the mean is 13, which of the following is most likely? Perfect. Your hard work is paying off � The data are skewed to the left. The...

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Statistics> QUESTIONS & ANSWERS > Chamberlain College of Nursing Week 1 Sampling Questions and Anwers Math 225N Statistics Quiz Latest 2022 (All)

Questions 1. Assume that 80 houses are present in the form of a grid consisting of 10 columns and 8 rows. If a loud speaker is placed just before the first row, which sampling method works the best...

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Statistics> QUESTIONS & ANSWERS > Chamberlain College of Nursing Week 5 Math 225N Statistics Quiz Latest 2022 (All)

Week 5 Assignment: Applications of the Normal Distribution - Excel Question Sugar canes have lengths, X , that are normally distributed with mean 365.45 centimeters and standard deviation 4.9 cent...

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Statistics> QUESTIONS & ANSWERS > Week 7 Hypothesis Testing Questions and Answers Chamberlain College of Nursing MATH 225N (All)

Week 7 Hypothesis Testing Q & A 1. Steve listens to his favorite streaming music service when he works out. He wonders whether the service algorithm does a good job of finding random songs that he w...

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Statistics> EXAM > Math 225N Chamberlain College of Nursing _Math 225N Week 8 Final Exam Statistical reasoning for health sciences. Latest Updated 2022 Already Passed (All)

MATH 225N Week 8 Final Exam Question 1 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, an...

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Statistics> QUESTIONS & ANSWERS > Chamberlain College of Nursing Statistic Final Latest 2022 Already Passed (All)

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 ter...

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