Question

Question 3 12 marks An study was conducted using data from pedometers of 68 randomly selected participants. The researchers wanted to know if the number of steps taken by a participant (Steps) could be predicted using the time they spent walking (Minutes). The data are available on MyUni in the file Steps.csv 2(a) Produce a scatterplot of Steps vs Minutes and describe any relationship between these two variables. (b) Perform a linear regression analysis on this data in MATLAB and then answer the following questions. Include your output from MATLAB in your assignment i. Write down the equation of the line of best fit. ii. Perform an appropriate hypothesis test to determine whether there is a statisti cally significant linear relationship between Steps and Minutes at the 5% level. Include the appropriate null and alternative hypotheses, test statistic, P-value, and conclusion. Define any parameters you use. 4(c) Determine, with accompanying plots, if the assumptions of the linear regression model are reasonable for this set of data. Steps,Min, keal,Mile 7537,17, 117, 4.2 10008,48,274,5.6 6912,29,166, 3.9 7552,33,186,4.3 6789,20,135, 3.8 4219,17, 90,2.3 9260,54, 280,5.2 5519,27,154,3.1 4465,14, 82,2.5 8057,47,237,4.5 6095, 24,136, 3.4 5260,13, 84,2.9 5613,13,90,2.9 8754,44, 251, .9 5993,22, 144, 3.4 4515,3,42,2.5 6534,18,108,3.7 4442,12,75,2.5 4498,10, 71,2.4 4863,11,71,2.7 3256,5, 35,1.9 3892,7,54,2.2 4363, 8, 53,2.4 7749,35,209,4.4 4469, 6, 52,2.5 4521,8, 56,2.5 4208,5,41,2.3 3353,7,47,1.8 6925,35, 195, 3.9 6217,29,160,3.5 6282,29, 164,3.5 3384,2,22,1.9 4038,3,33,2.2 3620,11, 69,2 942,9,61,2.2 6091,35,192,3.4 6245,28,168,3.5 6744,32,183,3.8 6563,24,151, 3.7 5621,11,99,2.7 7127,17,116, 4 5736,18,110,3.2 7279,35,214,4.1 10634, 54, 305, 5.3 9793,54, 317,5.5 6566,33,193,3.7 4058,2, 34,2.3 3347,6, 52,1.9 7546,34, 195, .2 7219,36, 205, 4.1 7805,41, 223, 4.4 5762,30,176,3.2 5707,23,142,3.2 2232,3,22,1.2 7071,36, 214,4 7443,39, 227,.2 5423,24, 132,3 8305, 42,237,4.7 2978,6, 42,1.6 2966,0,13,1.6 4727,10,82,2.6 2501,3,23,1.4 2703,3,20,1. 2635,4,25,1.4 1996,1,10,1.1 4142,13, 94,2.3 4057,11,72,2.3 4287,6,42,2.4

Answer 1

Production and operations management is a field of study in which we try to learn and understand how effectively and efficiently products can be developed, process can be improved, how quality standards may be set to the optimal level, how supply and logistics may produce value creation for the organization. The management of production and operations department generally taken care by production and operations manager or a team of engineers who know the specialized domain of material managememt, product design and scheduling, cost reduction techniques etc. Some of the operations management functions include interest to engineers, beginning with maintenance and plant engineering, followed by the functions of human resources management, and purchasing and materials management,Managing Technology,Research Design, Planning Production , Managing Production, Marketing management and project Management. The role of quality control manager is crucial in the field of operations manager . As he makes recommendations, investigations and frame policy for maintenance of high quality conscious products manufacturing so that customers get highest level of satisfaction. project management also plays important role for execution of a newly launched product to the market. The role of marketing management is important to understand for attracting and creating a pool of customers with best offers and services. It can be possible with an operational efficiency The role of human resources in operations management will be critical as they can moderate all the necessities and operational factors into reality so as to complete every type of business contracts by an organization