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Examen
MATH 225N Statistics Week 6 Quiz.
MATH 225N Statistics Week 6 Quiz.Question 1 
The population standard deviation for the heights of dogs, in inches, in a city is 3.7 inches. If we want to 
be 95% confident that the sample mean is within 2 inches of the true population mean, what is the 
minimum sample size that can be taken? Round up to the nearest integer. 
Answer: 14 dog heights 
Question 2 
Clarence wants to estimate the percentage of students who live more than three miles from the school. He 
wants to create a 98% confidenc...
Examen
MATH 225N Statistics Week 8 Final Exam.
MATH 225N Statistics 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, and the alternative hypothesis, Ha, in terms of 
th e 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 t...
Examen
MATH 225N Statistics Week 8 Final Exam.
MATH 225N Statistics 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, and the alternative hypothesis, Ha, in terms of 
th e 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 hypothe...
Examen
MATH 225N Statistics Final Exam.
MATH 225N Statistics Final Exam.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 
som...
Examen
MATH 225N Statistics Final Exam.
MATH 225N Statistics Final Exam.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 
som...
Examen
Math 225N Statistics Final Exam 2 Latest Versions 2023-2024/Math 225N Week 8 Final Exam Questions And Detailed Answers|Already Graded A+(Chamberlaine University)
Math 225N Statistics Final Exam 2 Latest Versions 2023-2024/Math 225N Week 8 Final Exam Questions And Detailed Answers|Already Graded A+(Chamberlaine University)
Examen
MATH 225N Statistics Week 8 Final Exam
·MATH 225N FINAL EXAM 2 – QUESTION AND ANSWERS 
 
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 E...
Examen
Week 2 Math 225N Statistics
WEEK 2 MATH 225N STATISTICS 
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 approval and has decided to test the claim "The glucose level reported by the wristband is within 10% of a standard blood test 
result." Which of the following data collection processes would be appropriate? Select only one answer choice. 
Choose a random sample of em...
Examen
MATH 225N Statistics Week 8 Final Exam
MATH 225N Statistics 
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, 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: 
H0: μ=33; Ha: μ≠33 
Let the parameter μ be used to represen...
Examen
MATH 225N Statistics Week 7 Assignment
MATH 225N Statistics Week 7 Assignment 
Week 7 Assignment Hypothesis Test for the mean-Polution Standard Deviation known 
Compute the value of the test statistic (z-value) for a hypothesis test for one population 
mean with a known standard deviation 
Question 
Jamie, a bowler, claims that her bowling score is less than 168points, on average. Several of 
her teammates do not believe her, so she decides to do a hypothesis test, at a 1% 
significance level, to persuade them. She bowls 17games. Th...