Math 221 week 5 quiz Study guides, Class notes & Summaries
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MATH 221 WEEK 7 QUIZ (100% CORRECT ANSWERS) | DeVry University.
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MATH 221 WEEK 7 QUIZ Question 1 2 / 2 pts (CO6) From a random sample of 55 businesses, it is found that the mean time that employees spend on personal issues each week is 5.8 hours with a standar d deviation of 0.35 hours. What is the 95% confidence interval for the amount of time spent on personal issues? Correct! (5.71, 5.89) (5.73, 5.87) (5.72, 5.88) (5.74, 5.90) Question 2 2 / 2 pts (CO6) If a confidence interval is given from 8.52 to 10.23 and the mean is known to be 9.375, what is the marg...
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MATH-221 - Week 5- Quiz
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MATH-221 - Week 5- Quiz 
Book: Chan, C. et al. (2022). Statistics for Decision Making (3rd ed.). zyBooks, A Wiley Brand. 
Course: (MATH 221) Statistics for Decision-Making - 61204
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MATH221 Week 7 Quiz (100% CORRECT ANSWERS).
- Exam (elaborations) • 14 pages • 2021
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MATH 221 Week 7 Quiz Question 1 (CO 4) From a random sample of 55 businesses, it is found that the mean time that employees spend on personal issues each week is 5.8 hours with a standard deviat ion of 0.35 hours. What is the 95% confidence interval for the amount of time spent on personal issues? (5.74, 5.90) (5.71, 5.89) (5.73, 5.87) (5.72, 5.88) Question 1 (CO 4) From a random sample of 68 businesses, it is found that the mean time that employees spend on personal issues each week is 5.8 hour...
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MATH 221 Week 6 Quiz (GRADED A) Questions and Answer Elaborations | DeVry University
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. MATH 221 Week 6 Quiz A consumer analyst reports that the mean life of a certain type of alkaline battery is more than 63 months. Write the null and alternative hypotheses and note which is the cl aim. Ho: μ ≤ 63, Ha: μ < 63 (claim) Ho: μ > 63 (claim), Ha: μ ≤ 63 Ho: μ = 63 (claim), Ha: μ ≥ 63 Ho: μ ≤ 63, Ha: μ > 63 (claim) A business claims that the mean time that customers wait for service is at most 9.2 minutes. Write the null and alternative hypotheses and note whic...
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MATH 221 Week 5 Quiz (v1)/ 100% Guaranteed Pass
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MATH 221 Week 5 Quiz (v1) Question: (CO 3) Consider the following table. If you … the probability distribution for these data, what would … the probability of 60-69? Question: (CO 3) Consider th e following table of hours worked by part-time employees. These employees must work in 5-hour blocks. Find the mean of this variable. Question: (CO 3) Consider the following table. Find the variance of this variable. Question: (CO 3) Consider the following table. Find the standard deviation of this v...
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MATH 221 - WEEK 6 QUIZ.
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MATH 221 - WEEK 6 QUIZ. / MATH 221 - WEEK 6 QUIZ. 
Question 1 
0 / 2 pts 
(CO 5) A company claims that its heaters last less than 5 years. Write the null and 
alternative hypotheses and note which is the claim. 
You Answered 
Ho: μ ≤ 5, Ha: μ > 5 (claim) 
Correct Answer 
Ho: μ ≥ 5, Ha: μ < 5 (claim) 
Ho: μ > 5 (claim), Ha: μ ≤ 5 
Ho: μ = 5 (claim), Ha: μ ≥ 5 
See text page 349
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MATH 221 WEEK 6 QUIZ (100% CORRECT ANSWERS) | Highly Rated Paper |100% correct
- Exam (elaborations) • 3 pages • 2023
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(MATH 221 Week 6 Quiz) Question: (CO 5) A company claims that its heaters last more than 5 years. Write the null and alternative hypotheses and note which is the claim. Question: (CO 5) An executive claims that her employees spend no more than 2.5 hours each week in meetings. Write the null and alternative hypotheses and note which is the claim. Question: (CO 5) In hypothesis testing, a key element in the structure of the hypotheses is that the null hypothesis has the Question: (CO 5) A landscap...
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MATH-221 Week 3 Quiz: Statistics for Decision-Making (v6) | Download To Score An A
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MATH-221 Week 3 Quiz: Statistics for Decision-Making (v6) Question: (CO 1) Among 500 people at the concert, a survey of 35 found 28% found it too loud. What is the population and what is the sample? Question: (CO 1) A survey of all 35 employees at a small company finds that 89% of them like the recent changes to the company’s benefits. Is this percentage a parameter or a statistic and why? Question: (CO 1) Classify the data of the number of customers at a restaurant. Question: (CO 1) The data ...
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MATH 221 WEEK 6 QUIZ (100% CORRECT ANSWERS) | Highly Rated Paper | GRADED A.
- Exam (elaborations) • 3 pages • 2023
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(MATH 221 Week 6 Quiz) Question: (CO 5) A company claims that its heaters last more than 5 years. Write the null and alternative hypotheses and note which is the claim. Question: (CO 5) An executive claims that her employees spend no more than 2.5 hours each week in meetings. Write the null and alternative hypotheses and note which is the claim. Question: (CO 5) In hypothesis testing, a key element in the structure of the hypotheses is that the null hypothesis has the Question: (CO 5) A landscap...
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MATH 221 - WEEK 5 QUIZ Statistics For Decision Making.
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MATH 221 - WEEK 5 QUIZ Statistics For Decision Making.
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