One- and Two-Sample Tests of Hypothesis‚ Variance‚ and Chi-squared Analysis Problem Sets University of Phoenix Applied Business Research and Statistics QNT 561 August 5‚ 2011 Chapter 10 Exercise Question 31: A new weight-watching company‚ Weight Reducers International‚ advertises that those who join will lose‚ on the average‚ 10 pounds the first two weeks with a standard deviation of 2.8 pounds. A random sample of 50 people who joined the new weight reduction program revealed the mean
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significantly different and the null hypothesis should be rejected. 2. State the null hypothesis for the Baird and Sands (2004) study that focuses on the effect of the GI with PMR treatment on patients’ mobility level. Should the null hypothesis be rejected for the difference between the two groups in change in mobility scores over 12 weeks? Provide a rationale for your answer. Answer: Treatment group mean=control group mean With the p-value being < the alpha‚ the null hypothesis would be rejected indicating
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the basil seed‚ would affect the growth. The null hypothesis for this experiment was that there would be no statistical difference between the green‚ yellow‚ and red basil seeds’ growth. Three alternate hypotheses are: If we expose the green seed to 48 hours of sunlight and the yellow seed to 24 hours of sunlight‚ then the green seed with grow more than the yellow. The opposite of this hypothesis would alternate 2. Another alternate hypothesis is (3): if we expose the yellow basil seed to 24 hours
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You will use the data you gathered above for the problems below and more question in future weeks. Practice Problems: 1) Use your data from above. This week assume that historically the average person takes 3 vitamins on a daily basis. Conduct a hypothesis test analysis to determine if 3 is still the correct average number. Write your hypotheses in correct statistical notation. Finally use the important numbers from your output to explain your results. Use alpha = 0.05. Post only the relevant
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Many professional and personal challenges confront practicum students as they work with clients. For example‚ students must establish a counseling relationship‚ listen attentively‚ express themselves clearly‚ probe for information‚ and implement technical skills in an ethical manner. Those counseling performance skills (Borders & Leddick‚ 1987) center on what counselors do during sessions. At a cognitive level‚ students must master factual knowledge‚ think integratively‚ generate and test clinical
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Quiz 3‚ with key Question 1 of 20 0.0/ 1.0 Points Accepted characters: numbers‚ decimal point markers (period or comma)‚ sign indicators (-)‚ spaces (e.g.‚ as thousands separator‚ 5 000)‚ "E" or "e" (used in scientific notation). NOTE: For scientific notation‚ a period MUST be used as the decimal point marker. Complex numbers should be in the form (a + bi) where "a" and "b" need to have explicitly stated values. For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is
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……………………………………………………………iAbstract………………………………………………………………………..iiCHAPTER 1: Problems and its Background………………………………5Introduction…………………………………………………….5Theoretical Framework…………………..…………………..6Conceptual Framework………………………..……………..7Statement of the Problem……………………..……………..9Research Hypothesis…………………………………………9Significance of the Study………………………..…………..10Scope and Delimitation………………………………………11Definition of Terms…………………………….……………..12CHAPTER 2: Review Related Literature…………………………………...14Foreign Literature…………………………………………….15Local Literature……………………………………
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ATTRITION IN BPO INDUSTRY: A SURVEY REPORT Abstract The BPO industry is undoubtedly considered as one of the biggest fields of employment in India and stands number two worldwide after Philippines. However‚ it is facing a phenomenal increase in attrition rate which is the biggest challenge. The current attrition rate is 55 %. (Source: 13 Oct‚ 2011‚ The Financial Express) as compared to the last year of 51%. Nasscom‚ in a report said that that the outsourcing industry is expected to face a shortage
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compared to their respective controls. However‚ the results showed no significant difference between the two means of the native seeds with brittle bush tea and the lettuce with brittle bush tea. This led to the rejection of our hypothesis and acceptance of the null hypothesis which stated that no significant difference existed between the two means. Introduction In the natural world‚ plants are in constant strain of exploitation and competition. Through the evolutionary process‚ plants have developed
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(page 338) – Large Sample Hypothesis Test of a Mean Example 6.3 A manufacturer of cereal wants to test the performance of one of its filling machines. The machine is designed to discharge a mean amount of 12 ounces per box‚ and the manufacturer wants to detect any departure from this setting. This quality study calls for randomly sampling 100 boxes from today’s production run and determining whether the mean fill for the run is 12 ounces per box. Set up a test of hypothesis for this study‚ using
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