Chapter 10
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 loss to be 9 pounds. At the .05 level of significance, can we conclude that those joining Weight Reducers on average will lose less than 10 pounds? Determine the p-value. 32. Dole Pineapple, Inc., is concerned that the 16-ounce can of sliced pineapple is being overfilled. Assume the standard deviation of the process is .03 ounces. The quality control department took a random sample of 50 cans and found that the arithmetic mean weight was 16.05 ounces. At the 5 percent level of significance, can we conclude that the mean weight is greater than 16 ounces? Determine the p-value. 38. A recent article in the Wall Street Journal reported that the 30-year mortgage rate is now less than 6 percent. A sample of eight small banks in the Midwest revealed the following 30- year rates (in percent): 4.8 5.3 6.5 4.8 6.1 5.8 6.2 5.6

At the .01 significance level, can we conclude that the 30-year mortgage rate for small banks is less than 6 percent? Estimate the p-value. Chapter 11
27. A recent study focused on the number of times men and women who live alone buy take-out dinner in a month. The information is summarized below. Statistic Men Women
Sample mean 24.51 22.69
Population standard deviation 4.48 3.86
Sample size 35 40
At the .01 significance level, is there a difference in the mean number of times men and women order take-out dinners in a month? What is the p-value? 46. Grand Strand Family Medical centre is specifically set up to treat minor medical emergencies for visitors to the Myrtle Beach area. There are two facilities, on in the Little River area, and the other in Murrells Inlet. The Quality Assurance Department wishes to compare mean waiting times for patients in...

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QNT561 Final Exam
1) Which of the following measures of central location is affected most by extreme values? A. MeanB. MedianC. Mode D. Geometric mean
2) A correlation matrix…A.Shows all simple coefficients of correlation between variablesB. shows only correlations that are zeroC. shoes the correlations that are positiveD. shows only the correlations that are statistically significant
3) In a set of observations, which measure of central tendency reports the value that occurs most often? A. Mean B. MedianC. ModeD. Geometric mean
4) Which level of measurement is required for the median? A. Nominal B. OrdinalC. IntervalD. Ratio
5) The mean and the variance are equal in…A. the normal distributionB. the binomial distributionC. the Poisson distributionD. the hypergeometric distribution
6) The difference between the sample mean and the population mean is called the…A. margin of errorB. population standard deviationC. standard error of the meanD. sampling error
7) A dummy variable or indicator variable… A. may assume only a value of 0 or 1B. is another term for the dependent variableC. is a quantitative variableD. is a variable at a ratio or interval level of measurement
8) A Type I error is…A. the correct decisionB. a value determined from the test statisticC. rejecting the null hypothesis when...

...QNT-561
Dr. Sam
Week 5 Homework
David Matheis
Chapter 10:
31) H0 = 10lbs
H1 < 10lbs
Reject if Z < -1.65
Z= 9-10/2.8/√50= -2.53
Reject the null hypothesis because the average weight loss is less than 10lbs
p-value=.5-.4943=.0057
32) H0 = 16oz
H1 = 16lbs
Reject if Z > 1.65
Z= 16.05-16/.03/√50= 11.79
Reject the null hypothesis because the 16 oz can will be overfilled.
p-value~0
38) H0 = 6%
H1 = < 6%
Reject if t < -2.99
.t=5.638-6/.6346/√8= -1.61
Accept the hypothesis because the 30 year mortgage rate is not less than 6%
p-value=.0751
Chapter 11:
27) H0 = There is no sig diff in the mean # of times men & women who live alone buy
H1 = There is sig diff in the mean # of times men & women who live alone buy
Reject if Z > 2.33
Z= 24.51-22.69/(√4.482/35+3.862/40) = 1.871
Accept the hypothesis because there is no difference in the mean for both men and women for take out dinners.
p-value = .0613
46) H0 = There is no diff in the mean for waiting times
H1 = There is a diff in the mean for waiting times
Reject if t > .05 ; With 20° of freedom , .05 sig level, critical values = -2.086 & 2.086
D=Little River-Murrells Inlet
= 1.77
.95 = (-1.67, 5.21)
T-test=0
T-value= 1.10
P-value=.288
Accept the hypothesis because there is no difference in the mean waiting time between the two facilities.
52) H0 = There is no diff in the price quoted for...

...Introduction
This paper intends to discuss the role of epistemology in research while defining knowledge as fact or fiction in society which constantly changes. The writer intends to utilize various methods of acquiring knowledge in both the natural tangible and intangible world composition. The end result may offer the reader a better understanding of the influences and formulation of a management research problem of knowledge itself.
Epistemology and Knowledge
What is knowledge? Easterby-Smith et al. (2012, p. 21) note that epistemology is inquiring via various methods regarding the composition of nature in both physical and social worlds. Knowledge itself can be described on what insight is gained from the situation regardless if the perspective is physical or social. The transfer of data from one element to another may be considered knowledge. Mosakliuk et al. (2013, p. 210) note that virtual training environments (VTE) require cooperation and interaction amongst team members where the transfer of knowledge may be complex due to the environment. Therefore, the transfer of knowledge is pertinent in a social or physical construct where dependent variables such as learning outcomes, collaboration and knowledge transfers are the end results of VTE. Knowledge is the transfer of information from one discipline to the other while gaining insight.
How knowledge is acquired
How is knowledge acquired? Knowledge can be acquired through training, education, family, openness,...

...Week 5 Problems
Applied Business and Research Statistics 5611. SupplyCo. is a supplier to a number of firms in an industry. By carefully mining its customer data warehouse, SupplyCo. reveals a plausible new model for manufacturing and distributing industry products that would increase the overall efficiency of the industry system, reduce costs of production (leading to greater industry profits and more sales for SupplyCo.), and result in greater sales and profits for some of the industry's manufacturers (SupplyCo.'s customers).
On the other hand, implementing the model would hurt the sales and profits of other firms that are also SupplyCo.'s customers but which are not in a position (due to manpower, plant, or equipment) to benefit from the new manufacturing/distribution model. These firms would lose sales, profits, and market share and potentially go out of business.
Does SupplyCo. have an obligation to protect the interests of all its customers and to take no action that would harm any of them, since SupplyCo. had the data within its warehouse only because of its relationship with its customers? (It would betray some of its customers if it were to use the data in a manner that would cause these customers harm.) Or does it have a more powerful obligation to its stockholders and employees to aggressively pursue the new model that research reveals would substantially increase its sales, profits, and market share against...

...Week Four Team Paper
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QNT/561
August 1, 2012
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Week 4 Team Paper
Best Buy is a company that has 40 years of history with a very accomplished sense of success. In 1966 Best Buy was a small electronics store in that originated in St. Paul Minnesota by Richard Schulze and an acquainted business partner. Considering that technology changes so rapidly, Best Buy has had to transform from just being the little electronics store down the way into a competitive, customer-driven, talent-powered company that emphasizes on pleasing the customers as it pertains to the life of technology. In 1993 Best Buy was recognized as the nation’s second largest electronics retailer and was recognized by Forbes in 2004 as the “Company of the Year.” However, in 2012 Best Buy had a huge layoff which resulted into 50 store closings. The competitors for Best buy include online stores like Amazon, Buy.com, Tiger direct and various others.
Purpose
Best Buy stores are located throughout the United States and every year additional employees are hired to help staff during the holiday season (known as seasonal staffing and typically runs during holiday season). Higher head count is inefficient and expensive. This poses an organizational dilemma; can sales data be used to identify the appropriate number of temporary employees that need to be hired during the holiday season? Considering the sheer amount of...

...of America. Convenience of banking within the confines of my home or anywhere but walking into the bank was the first thing that came to mind when given that option. However, i was told that i will be charged some fees if i happen to walk into the bank to transact any business. It sounded good to me at that time. There was a time however that i needed to cash a cheque for immediate cash. On getting to the register, i was reminded that i could cash the check but it will be at an extra fee because of the online banking i opted for when opening an account. Therefore, i was told i could also use the ATM and will not be charged. Initially i though that depositing a check will not give immediate access to the cash. This is because i am aware that 1 - 2 days might be needed to clear the money. (I once spent some money that the status was "processing" and i was charged overdraft and i did not want it to happen again). On the contrary, i was told i could get the cash immediately. There will be times one may need to walk into the bank for some transactions e.g wire transfer etc. but to a large extent the advantage of online banking is great, hence i will avoid as much as i can, walking into the bank.
...

... Verizon had the highest overall score, 71 out of 100 points” (Today, 2013). The sampling method relies on reports of actual cell phone performance that is important to consumers. The design for the scale is to meet two basic criteria: 1) published company data, and 2) the information must be relevant to the consumer’s concerns.
Data Analysis and Types
By surveying 65 cell phone companies, the opinion of what consumers would rate as important (on a scale of 0 to 10) in judging phone quality, provides the secondary data for this paper. To decide the customer’s perception of quality, the data is assigned a plus or minus sign to reflect the impact for that principle.
Customer Service Rating (CSR) is comparable across cell phone industries; and across time, yearly rating results are examined both individually and collectively. According to the conducted research, the Chi-squared method and will conclude whether AT&T has increased or decreased its CSR over time compared to other cell phone companies.
Results
H₀: = is no significant difference in AQR across SWA across time
Ha:= there is a difference in AQR across SWA across time a = .05
t = chi-square corresponding to df = 6, a = .05 crv= 12.592
| fo | fe | fo-fe | (fo-fe)^2 | (fo-fe)^2/fe |
2009 | 1 | 1.34 | -0.34 | 0 | 0 |
2008 | 1.23 | 1.34 | -0.11 | 0.0121 | 0.00903 |
2007 | 1.59 | 1.34 | 0.25 | 0.0625 | 0.046642 |
2006 | 1.39 | 1.34 | 0.05 | 0.0025 | 0.001866 |
2005 | 1.06 | 1.34 | -0.28 | 0.0784...

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mean = 2.9553
stdev = 0.5596
Get the t test statistic:
t = (x-mu)/(stdev/sqrt(N))
t = (2.9553-3.5)/(0.5596/sqrt(17))
t = -4.0133
Get the critical value for df = N-1 = 16, one tail, alpha is 0.05:
-1.7459
Since our test statistic is much lower than the critical value, we reject the null hypothesis. There is enough evidence to conclude that games are shorter than 3.50 hours.
Chapt 11 # 58
The amount of income spent on housing is an important component of the cost of living. The total costs of housing for homeowners might include mortgage payments, property taxes, and utility costs (water, heat, electricity). An economist selected a sample of 20 homeowners in New England and then calculated these total housing costs as a percent of monthly income, five years ago and now. The information is reported below. Is it reasonable to conclude the percent is less now than five years ago?
Home Owner Five years ago Now
1 17% 10%
2 20 39
3 29 37
4 43 27
5 36 12
6 43 41
7 45 24
8 19 26
9 49 28
10 49 26
11 35% 32%
12 16 32
13 23 21
14 33 12
15 44 40
16 44 42
17 28 22
18 29 19
19 39 35
20 22 12
SOLUTION
Before After
1 17 10
2 20 39
3 29 37
4 43 27
5 36 12
6 43 41
7 45 24
8 19 26
9 49 28
10 49 26...