Bottling Company Case Study Example | Topics and Well Written Essays - 500 words

Bottling Company - Case Study Example The above parameters are calculated using Excel built in functions. The mean and median are very close to each other; it shows that the data do not have skews. Standard deviation of sampling data are small, which states that values are close to the mean. In statistics, the population mean is measured through the sample mean. Statistics uses a concept called confidence interval in order to calculate a population mean. This assignment uses a 95% confidence interval to evaluate a range of the population mean. The confidence interval, in this case, is measured using method of unknown mean and unknown standard deviation of the population. The range is achieved using the central tendency values and the critical value of t, and SE. The critical value is calculated using Excel formula T.INV.2T(0.05,29); where 0.05 is the significance level of 95% confidence interval, 29 is the degree of freedom, df = n-1. The t critical = 2.045. The term SE is called standard error; it is calculated using formula STDV / sqrt (n). In this case, SE = 0.1. The upper limit of the interval = X mean + t*SE = 14.87+2.045*0.1=15.08. The lower limit of the interval is X mean +t.*SE = 14.87-2.045*0.1 = 14.66. Thus, the 95% confidence interval is (14.66, 15.08). In this case, customer’s complaint is that the soda in the bottle is less than 16 ounces; however, the company claims that the soda in the bottle is 16 ounces. These two statements give the basis for the hypothesis test (â€Å"What is hypothesis testing†, n.d.). The alternate hypothesis is the population mean is less than 16 ounces; null is the population mean is equal or greater than 16 ounces. The significance level of the test is 5%. Based on the alternative statement, it is advised to conduct a left tail test of mean; for this purpose test statistics is defined as t = (x mean - ÃŽ ¼) / SE = (14.87-16.0) / 0.1 = - 11.25. Based on degree of freedom, df = 29 and significance level

Critical Review on Shelby Lee Adams's Photography Essay

Critical Review on Shelby Lee Adams's Photography - Essay Example His works have also been published in two volumes. The photography of Shelby Lee Adams presents people in their normal lives and environment capturing their way of life. Adams has captured people in their families showing the importance of family. The photography of Shelby Lee Adams has captured a representational and hegemonic way of thinking about the Appalachian community. For instance, the photographs reveal information about poverty, family life and illiteracy. Most of Adams’ photography shows the subjects in their real world situations enjoying the attention from the camera. The manner in which Adams captures his subjects reveals a lot about them. He has captured the social life of his subjects in a clear manner. Adams’ pictures promote a hegemonic way of thinking about poverty in Appalachian society. The photographs present subjects and families that seem to be in consensus with their poor conditions. His pictures show large extended families that live in primiti ve conditions especially in rural places. For example, the picture that shows the Napier family in 1989 show two old people with three other young adults. Napier family, 1989 The picture clearly shows that the Napier family is poor. The look of their dresses reveals that there are not rich families. For example, one of the sons, standing next to the father, on the left side of the photo has no shirt. He has a pair of trousers that is dirty and has sticky substances at the knees. The wall where they are standing is old with worn out wood pieces. The viewer cannot tell whether the photo was taken in the house or outside judging by the poor conditions around the subjects. The faces of these people show a smile clearly meant for the camera moment. These photos present the sad picture of the Appalachian community from the 1950s to the 1990s. They show the poverty and dilapidated conditions