PROBLEM-1 Prof. Hardtack gave four Friday quizzes last semester in his 10 student senior tax accounting class. Find the mean, standard deviation and coefficient of variation for each quiz. a) How do these data sets differ in terms of Central Tendency and Dispersion? b) Briefly describe and compare student performance on each quiz. Quiz 60 60 60 60 71 73 74 75 88 99 1 Quiz 65 65 65 65 70 74 79 79 79 79 2 Quiz 66 67 70 71 72 72 74 74 95 99 3 Quiz 10 49 70 80 85 88 90 93 97 98 4
PROBLEM 2
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A multinational bank issuing Master Card is monitoring the use of credit card account holders in the context of their spending habits. A market survey shows that the average monthly spending of it’s regular card users is normally distributed
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A random sample of 144 packages of the food product is collected, and it is found that the average net weight in the sample is 11.8 oz. and the sample standard deviation is 6 oz. Given these findings, is there evidence the manufacturer is under filling the packages? Use test of hypothesis procedure by forming suitable null & alternative hypotheses.
PROBLEM-8
• “After looking at 1349 hotels nationwide, we’ve found 13 that meet our standards.” This statement by the Small Luxury Hotels Association implies that the proportion of all hotels in the United States that meet the association’s standards is 13/1349=0.0096. The management of a hotel that was denied acceptance to the association wanted to prove that the standards are not as stringent as claimed and that, in fact, the proportion of all hotels in the United States that would qualify is higher than 0.0096. The management hired an independent research agency, which visited a random sample of 600 hotels nationwide and found that 7 of them satisfied the exact standards set by the association. Is there evidence to conclude that the population proportion of all hotels in the country satisfying the standards set by the Small Luxury hotels Association is greater than
The customers in this case study have complained that the bottling company provides less than the advertised sixteen ounces of product. They need to determine if there is enough evidence to conclude the soda bottles do not contain sixteen ounces. The sample size of sodas is 30 and has a mean of 14.9. The standard deviation is found to be 0.55. With these calculations and a confidence level of 95%, the confidence interval would be 0.2. There is a 95% certainty that the true population mean falls within the range of 14.7 to 15.1.
Projects4Technology’s transition as a virtual business company requires a great deal of understanding and in depth analysis. While I was going to complete my assignment I have gone through a complex research which has involved me to study more about the topic and also gave me a first-hand knowledge of how to plan for a company.
Starbucks is a strong competitor in the service sector and a leader in the gourmet coffee industry. With a continued growth rate in store openings and maintaining successful profitability of its operations, Starbucks has demonstrated its ability to sustain a reliable and steady growth. Starbucks’ ability to contend with the vulnerability to current financial threats such as economic recession, higher interest rates, and global competition, is constantly proven by its incomparable brand image, its continual product innovations, and its exceptional customer service. This
For some people Starbucks is a part of their morning rituals for others it is just a coffee shop for their Frappuccino’s. However, for some Starbucks is much more, those who work at Starbucks are members of their own subculture. A subculture is a group within society that shares the same values and interests. The people who work at Starbucks are made up by baristas, the entry level employee, shift supervisors, and managers. This team of employees’ works together closely to provide customers with the best experience and produce possible. Through working so intimately with one’s coworkers creates the aspects of a subculture. Without them Starbucks as a company and per store would not be able to run as efficiently as they do today. Starbucks
Enthusiast coffee drinker or not, people of all generations have heard of the popular franchise Starbucks Coffee Company. Opened in 1971, Starbucks started off as a single store located in Seattle. Today the well-known coffee chain has spread their name almost all over the globe. With over 21,000 locations in 64 countries, Starbucks is by far the largest leading coffee company in the world. Starbucks Coffee has different values compared to other coffee corporations that do not see the importance in giving back to communities around them and treating their employees as equals, all while striving to provide their customers with high quality products that are ethically sourced.
(Points: 5.0) Assume that the data has a normal distribution and the number of observations is greater than fifty. Find the critical z value used to test a null hypothesis.
A confidence interval was used to estimate the proportion of statistics students that are female. A random sample of 72 statistics students generated the following 90% confidence interval: (0.438, 0.642). Using the information above, what size sample would be necessary if we wanted to estimate the true proportion to within ±0.08 using 95% confidence?
In a supply chain, distribution means the steps required to move and store a product from supplier stage to customer stage. It is an important driver for overall profitability of a company because it affects both the supply chain cost and the customer experience directly. (Chopra and Meindl, 2010, p68) A typical distribution network of coffee distribution system is like this (Starbucks Coffee Company, p22):
Globalization greatly influenced businesses to expand worldwide. Cross boarder communications let people all around the world to exchange demand on services and products. Besides, countries opened boards to foreign investments. New type of business
Hypothesis testing is very essential in statistical analysis. It is quite imperative to state both a null hypothesis and an alternative hypothesis when conducting a hypothesis test because the hypotheses are mutually exclusive and if one statement is true then the other is proven as false. According to Mirabella (2011, p. 4-1) states that, “When we have a theory about a parameter (the average is…,the proportion is….,etc), we can test that theory via a hypothesis test.”
This paper will provide a sample of the fundamental concepts in statistics. During research there is usually variance between individuals within a group or between different groups. During hypothesis testing the researcher wants to know if the sample of data collected is truly representative of the entire population.
Similarly, the number of defectives among the ten televisions of brand B is 2M. In order to test the null hypothesis H0: M = 2 against the alternative Ha: M > 2, the following procedure is adopted:
Starbucks adalah salah satu dari kedai kopi waralaba yang berasal dari Amerika Serikat. Starbucks sendiri bermarkas di Seattle, Washington. Starbucks pertama kali didirikan di Seattle’s Pike Place Market yang berlokasi di Seattle, Washington (Amerika Serikat) pada tahun 1971. Saat ini, Starbucks merupakan kedai kopi terbesar di dunia dengan 15.012 kedai di 44 negara. Salah satunya adalah Indonesia.