Three projects were chosen to finish the same task. The following table showsthe average time (in hours) took for each project to complete the taskProject-120Project-228Project-3201926262422312327220 Use these data to test if the population mean times differ for the threeprojects. Level of significance is given as 0.5.(At the 0.5 level of significance, test for the equality of the means for project1 and 3 (using Fisher's LSD method).(in) Develop a 95% confidence interval estimate of the difference between themeans for projects 1 and project 2 (using Fisher's LSD method).Do NOT use EXCELal ) Do not reject the null hypothesis(There does not appear to be any significant difference() -8.54 to -1.46b) O Reject the null hypothesis) There does not appear to be any significant difference( 10.54 to-3.46aM Do not reject the null hypothesis(1) There does not appear to be any significant difference(iii) -10.54 to-3.46O) Reject the null hypothesis(ii) There does not appear to be any significant difference(i)-8.54 to -1.46(O e) None of the answers are correct

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Nature lovers’ association of Australia, launched a campaign to encourage paper less communication and/or recycling of used papers to save the trees to reduce global warming. Hence, many small businesses have scaled up their business such as new forms of online document exchanges and collecting used papers and cardboards from households and companies. Abita Recycling Ltd is one such company which is operates in Melbourne. The financial analysist of the company has estimated that the firm would make a profit if the mean weekly collection of papers and cardboards from each household exceeded 1KG. To examine the feasibility of a recycling plant, a random sample of 100 households was selected and sample mean and standard deviations are 1.1KG and 0.35KG respectively. Following the 6-step process of hypothesis testing, you are required to examine do this information provide sufficient evidence at 99% confidence to allow the analyst to conclude that a recycling plant would be profitable?
A manufacturing firm produces its products in batches using sophisticated machines and equipment. The general manager wanted to investigate the relationship between direct labor costs and the number of units produced per batch. The recorded the data from the last 30 batches is below Batch Size Labor Cost Batch Size Labor Cost (5) 25 34 19 31 39 21 21 19 40 36 34 29 26 36 423 415 447 430 340 317 362 452 464 438 420 400 469 25 39. 25*8585& 29 31 21 36 39 29 41 35. 21 29 25 395 88888883 429 440 420 400 425 420 401 451 422 410 395 409 Determine the fixed and variable labor costs (Round your answers to the nearest cent) fixed cost 5 variable labor cost
The number of heart surgeries performed at a hospital has increased over the past several years. The hospital’s administration is seeking the best method to forecast the demand for such surgeries in Year 6. The data for the past five years is shown. Year Demand 1 130 2 139 3 135 4 144 5 141 The hospital is considering the following forecasting methods. Compare the performance of these methods using the mean squared error (MSE). Begin error measurements in year 3 so all methods are compared for the same years. Exponential smoothing, with α = 0.5. let the initial forecast for year 1= 130, the same as the actual demand. Two-year simple moving average Two-year weighted moving average, using weights 0.7 and 0.3, with more recent data given more weight. Solve this problem on a separate paper. Then, use the results to complete the tables provided below, save the file and then submit it on E-learning. 1- Exponential smoothing: Year Forecast…
given the data on the table below, solve for the weighted mean
1. Kindly help me to answer this problem with complete solution. Thank you’
Using the computerised till in a shoe shop, the manager can predict what stock to order from the previous week's sales. Opposite is the tabularised print-out for last week for men's shoes. Q4 Shoe size 5 8 9 10 11 frequency 9 28 56 70 56 28 a) The mean, mode and median for thiş data can be compared. For each of the following - statemeņts 'decide whether it is true or false. i) The mode for this data is 70. ii) The mean.is greater than the median for this distribution. ii) The mean, median and mode are all equal in this distribution. b) What percentage of customers bought shoes of the mean size from last weeks sales data: i) 30% ii) 70% iii) 0.273% or iv)27.3%?
Q1 Identify the statement below that best describes why we chose the mean as our preliminary model. a) The mean is a balancing point about which the sum of the residuals is zero. b) The mean is the value that minimizes the sum of squares and therefore minimizes the variance. c) The mean is the value that minimizes the sum of sqaures and therefore minimizes the standard deviation. d) All of the above.

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