Hypothesis testing Essay Example | Topics and Well Written Essays - 250 words

Hypothesis testing - Essay Example There is a procedure followed in hypothesis testing. The first step involves the stating of both the null and alternate hypothesis. The hypothesis is stated in a manner that they are mutually exclusive. The second stage is the determination of the level of significance (Lehmann, 2004). The higher the level of significance, the higher the precision attained. The sample size is then determined to allow for the collection of data. The size of data will determine the type of test conducted. After the collection of data, one moves to the stage of data analysis. In this stage, the value of test statistics is calculated e.g. z-value or the t-value (2012). The analysis of the calculated value is made by use of the statistical tables. The table is used to determine if the calculated score falls within the acceptance or rejection region (Lehmann, 2004). The final stage is then made depending on the location of the score. If the calculated value falls in the rejection region, the null hypothesis is rejected implying that there is significant variation in the observation made. Two kinds of error can be made in hypothesis testing: type one and type two errors. Type one error is that which leads to the rejection of null hypothesis which is true whereas type two error is the error of accepting a false null hypothesis. In conclusion, the stages in hypothesis testing if well followed makes the hypothesis testing easy to comprehend and make statistical decisions. Hypothesis testing is therefore essential in analyzing data to determine its validity and truthfulness hence important in making statistical

Principles of Operations Management Assignment Example | Topics and Well Written Essays - 1250 words

Principles of Operations Management - Assignment Example Receipt of raw materials and dispatch of products From the requirements projected it is learned that this firm has a receipt of raw materials and dispatch of produced goods in quite reasonable quality. This demands the following. a) Receipt area should be near to the road, b) Receipt area has sufficient vehicle parking area. c) Receipt area has sufficient space for material handling equipments and men to work. d) Dispatch area should again be near to road e) In order to avoid difficulties in traffic management ,both receipt and dispatch area is required to be at both axis. Re-Layout of shop floor Generally when considering a re lay out the following should be kept in the mind. a)saving space by utilizing unused areas, b)save resources by reducing distances between similar machineries and related process, c) arrange the equipments/machineries/steps in progressive manner, d) save man and machine efforts by placing more of raw/incomplete products in a given sequence to achieve shorter distance, e)further developments :- always think 10 years in advance and anticipate the automation and use of robots for all production activities. Justification of layout of sections 1. Saw Sawing is given 90 sqm according to the requirement. It need to be near the entrance to facilitate easy movements of raw materials to the shop. Since here the receipt of raw materials is involved there will be lot of movements of personnel consignment carriers had own supervisors and workers. Hence it is located next to the walkway .IT is placed near to the road at the approach to facilitate sufficient parking space to the vehicles. safety of the workers is very important at this sect. 2. Press 1 This is a process required immediately after sawing. Hence need to be next or near to sawing area to