The variance in a production process is an important measure of the quality of the process. A large variance often signals an opportunity for improvement in the process by finding ways toreduce the process variance. Jelly Belly Candy Company is testing two machines that use different technologies to fill three pound bags of jelly beans. The following tables contain a sample ofdata on the weights of bags (in pounds) filled by each machine.Machine 12.95 3.45 3.50 3.75 3.48 3.26 3.33 3.202Ha: 013.16 3.20 3.22 3.38 3.90 3.36 3.25 3.28State the null and alternative hypotheses.2Ho: 01 #3.20 3.22 2.98 3.45 3.70 3.34 3.18 3.353.12Conduct a statistical test to determine whether there is a significant difference between the variances in the bag weights for two machines. Use a 0.05 level of significance. What is yourconclusion?2Ho: 01=22Ho: o.01 < 02H₂: 0₁² > 0₂²220220222Ho: 0₁² > 0₂²01022H₂: 0₁² ≤0₂²01202²2H₂: 0₁²0₂²Machine 223.22 3.30 3.34 3.28 3.29 3.25 3.30 3.273.38 3.343.35 3.19 3.35 3.05 3.36 3.283.30 3.28 3.30 3.20 3.16 3.33

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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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Listed below are the measured radiation emissions (in W/kg) corresponding to cell phones: A, B, C, D, E, F, G, H, I, J, and K respectively. The media often present reports about the dangers of cell phone radiation as a cause of cancer. Cell phone radiation must be 1.6 W/kg or less. Find the a. mean, b. median, c. midrange, and d. mode for the data. Also complete part e. 0.52 0.76 0.47 1.01 0.21 0.62 0.87 0.83 1.36 1.06 1.38 a. Find the mean. The mean is (Round to three decimal places as needed.) b. Find the median. The median is (Type an integer or a decimal.) c. Find the midrange. The midrange is (Type an integer or a decimal.) d. Find the mode. Select the correct choice below and, if necessary, fill in the answer box within your choice. OA. The mode(s) is (are) (Use a comma to separate answers as needed.) Q OB. There is no mode. -C
Part II. The data below represents the weights (in kgs) of a sample of 20 giant turtles: 61 65 67 67 69 73 74 74 74 77 77 78 80 84 88 89 92 93 95 96 1. Construct a Stem-and-Leaf display of this data based on the stems 6, 7, 8, 9. 2. Find the percentage of weights greater than or equal to 73 kgs. 3. Find the percentage of weights less than 80 kgs.
The total cost for a production process is $600 minus two times the number of units produced. The mean and variance of the number of produced are 200 and 20, respectively. So, the mean and variance of the total cost are O A. 600, 200 O B. 1000, 560 O C. 200, 8O O D. 400, 180
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A manufacturer of exercise equipment wanted to collect data on the effectiveness of their equipment. A magazine article compared how long it would take men and women to burn 200 calories during light or heavy workouts on various kinds of exercise equipment. The results summarized in the accompanying table are the average times for a group of physically active young men and women whose performances were measured on a representative sample of exercise equipment. Assume normality of the population. Complete parts (a) through (c) below. Click the icon to view the data table. C a) On average, how many minutes longer than a man must a woman exercise at a light exertion rate in order to burn 200 calories? Find a 95% confidence interval. minutes (Round to one decimal place as needed.) b) Estimate the average number of minutes longer a woman must work out at a light exertion than at heavy exertion to get the same benefit. Find a 95% confidence interval. (₁) minutes (Round to one decimal place…
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Tornadoes The following data represent the width (inyards) and length (in miles) of tornadoes.Width (yards), w Length (miles), L200 2.5350 4.8180 2.0300 2.5500 5.8400 4.5500 8.0800 8.0100 3.450 0.5700 9.0600 5.7Source: NOAA(a) Draw a scatter diagram of the data, treating width as theindependent variable.(b) What type of relation appears to exist between the widthand the length of tornadoes?(c) Select two points and find a linear model that containsthe points.(d) Graph the line on the scatter diagram drawn in part (b).(e) Use the linear model to predict the length of a tornadothat has a width of 450 yards.(f) Interpret the slope of the line found in part (c).
The increasing annual cost (including tuition, room, board, books and fees) to attend college) to attend college has been widely discussed in many public including Money magazine. The following random samples show the annual cost of attending private and public colleges. Data are in thousands of dollars. Click on the datafile logo to reference the data. Round degrees of freedom to the preceding whole number. DATA file Private Colleges 52.8 30.6 20.3 43.2 Public Colleges 45.8 22.8 22.0 25.8 45.0 33.3 37.8 50.5 28.2 15.6 18.5 44.0 25.6 42.0 a. Compute the sample mean and sample standard deviation for private and public colleges. Round your answers to two decimal places. F1 = 24.1 28.5 21.8 14.4 F2 = S₁ = S₂ b. What is the point estimate of the difference between the two population means? Round your answer to one decimal place. Interpret this value in terms of the annual cost of attending private and public colleges. $ c. Develop a 95% confidence interval of the difference between the…
The total cost for a production process is $ 600 minus two times the number of units produced . The mean and variance of the number of produced are 200 and 20, respectively . So, the mean and variance of the total cost are: A.600 , 200 B.400, 180 C. 200,80 D. 1000, 560

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