System of linear equations

A sample revealed three bags of 56, two bags of 57, one bag of 55, and two bags of 58. To test the hypothesis that the mean candies per bag is 56, how many degrees of freedom are there? * 8 * 9 * 7 * 1 Which of the following is most appropriately displayed with a frequency table? * What percentage of people prefer Hunt's brand ketchup * The home location of the most valuable customers * The relationship between gender and job performance *…

American University of Beirut (AUB) Faculty of Engineering and Architecture (FEA) Department of Electrical Engineering Biomedical Engineering Seminar (EECE 401) Prof. Nassir Hussni Sabah Assignment 1 Seminar on Birdsong Waddah Malaeb Mechanical Engineering 201204320 wam13@mail.aub.edu 1. Describe the neuronal pathway involved in vocalization of bird song. In the above figure shown, in blue is the vocal motor output pathway, where the signal begins in the HVc (High vocal center) which…

possess relatively higher response at wavelength 250 when compared to wavelength 225. At 225 nm only VAL has high response but SAC shows low response with low peak area recorded. So, 250 nm was chosen as the best wavelength for our study. System suitability The system suitability parameters were tested as an integral part of method development. According to FDA different parameters were calculated[18]. The values of capacity factor and theoretical plates were 1.50, 2.11 and 12667, 13649, for…

The tensile testing was done on the three composite specimens (90°, and two 45°) were completed with a servo-hydraulic load frame with a wedge. The one in the lab was an MTS 647 Hydraulic Wedge Grip and an 810 Material Test System. The specimens had strain gages with a Wheatstone bridge to collect data such as time, distance, load, axial strain, and transverse strain in volts which was converted into pounds per force (lbf), pressure (psi), and etc. for data analysis. From the strain gages,…

While the nine classes considered originally began with a total enrolment of approximately 450, students who withdrew midway through the semester or failed to ever attend class are excluded from the results. As a result, there was a very strong positive correlation between the overall scores obtained on the written homework assignments (M = 78.08, SD = 23.07) and the combined exams (M = 72.76 SD = 17.51), with r = 0.71, p < 0.001, N = 375. This is noteworthy given that the exams (which are…

We were able to determine the moles of a gas which resulted to 5.5x〖10〗^(-3)mol O_2. This led to a R constant, 2.1 x 〖10〗^(-2) (atm∙L)/(mol∙K). Graph 1 did not result as linear as expected but it did have a negative slope to an extant which demonstrated that as the volume gets higher then the pressure decreases. Graph 2 and 3 did have a more positive slope proving that as the pressure increases, the 1/V and PV also increased…

In 1987, Baker International and Hughes Tool Company merged and Baker Hughes Incorporated was conceived. Baker Hughes Incorporated is one of the world's largest oilfield services companies. Operations of Baker Hughes are carried out in over 90 countries all over the world having its main headquarters in the America Tower in Houston. Services provided by Baker Hughes are for drilling, completion, reservoir consulting, formation evaluation, production and unconventional solutions. Baker Hughes's…

probability level of p=0.05 was considered as significant difference. The data obtained from the RSM on the hydrocarbon removal were subjected to the analysis of variance (ANOVA) and the results were fitted to the following second-order polynomial equation (Vieira et al., 2009; Gomez and Sartaj, 2014): where Y is the predicted response (hydrocarbons removal), XiXj are the independent variables, β0 is…

Experiment 37: Friction Anne Smolinski as910513@ohio.edu Wednesday 11:50-1:40 TA: Sanjoy Sarkar November 11, 2017 Experiment 37: Technical Report ABSTRACT In experiment 37, the friction force is being explained and tested by using a block that is being pulled across a wooden base. Out of the four different types of friction, two will be tested during this experiment: (i) static and (ii) kinetic. Static friction can be defined as the force that resists motion of an object to a surface so…

Introduction Lead (Pb) contamination is a pervasive issue in many low-income neighborhoods throughout the United States. The toxicity of lead poses significant risks to human health, and proves to be especially harmful for children in terms of cognitive and physical development. Lead in the environment is primarily related to a legacy of anthropogenic sources including leaded gasoline, leaded paint, and various industrial applications. Although the presence of heavy metals is ubiquitous in the…