Math 221 week 1 quiz - Study guides, Class notes & Summaries
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MATH 221 WEEK 1-4 Assignments|Quizes Collection Latest -2021
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MATH 221 Week 1 HW_QUIZ_MATH221 VII
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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 1 Quiz (100% Correct Answers)
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MATH 221 Week 1 Quiz (100% Correct Answers)
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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 1 QUIZ
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MATH 221 Week 1 QUIZ
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MATH 221 Week 1 Quiz
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1.	Question: (CO 1) A survey of 385 people who like wild sweaters found that 74% had a wild holiday sweater. What is the population and what is the sample? 
2.	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? 
3.	Question: (CO 1) Classify the data of the heights of ladders produced by a tool company. 
4.	Question: (CO 1) The data set that lists the nu...
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MATH221 Week 7 Quiz (100% CORRECT ANSWERS).
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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 1 Quiz (100% Correct Answers)
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Question: (CO 1) A survey of 385 people who like wild sweaters found that 74% had a wild holiday sweater. 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 heights of ladders produced by a tool company. 
Question: (CO 1) The data set that lists the number of perf...
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MATH 221 Week 2 Quiz (100% Correct Answers)
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Question: (CO 2) A random number generator is used to select a number from 1 to 100. What is the probability of selecting an even number? 
Question: (CO 2) What is the sample space to responses to a question whose answers are Yes or No, along with a question on location with possible answers of North, South, East, or West? 
Question: (CO 2) Consider the table below. What is the probability that the next person asked has four or more cats? 
Question: (CO 2) Consider the table below. What is the p...
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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 
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