The efficiency ratio for a steel specimen immersed in a phosphating tank is the weight of the phosphate coating divided by the metal loss (both in mg/ft2). An article gave the accompanyingdata on tank temperature (x) and efficiency ratio (y).stemTemp. 170 172 173 174 174 175Ratio 0.85 1.30 1.42 1.03 1.07 1.08Temp. 181 181 181 182 182 182 183 184 184 185 186 188Ratio 2.15 0.85 1.43 0.91 1.81 1.94 2.68 1.49 2.52 3.013.01 1.871.87 3.08(a) Construct a stem-and-leaf display of temperature. (Split the stems, placing leaves 0 to 1 on the first stem, leaves 2 to 3 on the second stem, etc. Enter numbers from smallest to largestseparated by spaces. Enter NONE for stems with no values.)17 017 2317 44517 671817 NONEUSE SALT18 000011118 2223445leaf18 618 8176 177 180 180 180 1801.04 1.80 1.45 1.60 1.61 2.13Comment on interesting features.The distribution is approximately symmetric and the variation is smallConstruct a stem-and-leaf display of efficiency ratio. (Trucate the hundredths digit and split the stems, placing leaves 0 to 1 on the first stem, leaves 2 to 3 on the second stem, etc.Enter numbers from smallest to largest separated by spaces. Enter NONE for stems with no values.) stem000001111222233leafComment on interesting features.The distribution is positively skewedand the variation is ---Select--- .(b) Is the value of efficiency ratio completely and uniquely determined by tank temperature? Explain your reasoning.The efficiency ratio is not ✓ uniquely determined by temperature since there is data with equal temperatures associated with differentefficiency ratios.

Stem and leaf plot : It is a method to represent the data. Data divided into two parts ( stems and…

Answered: The efficiency ratio for a steel…

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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answer a,b and c.
One of the steps involved in the processing of corn flakes for cereals involves toasting the flakes. The accompanying table contains data for corn flakes thickness in millimeters for four different toasting times in seconds. 11.1.7-T 20 Sec 40 Sec 60 Sec 80 Sec1.4 1.6 1.9 1.10.8 1.7 1.3 0.70.7 0.8 0.6 0.4
An experimental self-driving car is observed as it moves back an forth on a straight stretch of road. The car's velocity ( measured in meters per second) is a function of time (measured in seconds). The velocity is shown in the graph below. Positive velocities mean the car is moving toward the east and negative velocities mean its motion is toward the west. Using the values given below for the labeled areas in the graph, determine how far east of its starting position the car was at the end of t = 10 seconds. A = 2 B = 8 C = 15 Velocity in meters per second Time t = 10 В seconds
When purifying drinking water you can use a so-called membrane filtration. In an experiment one wishes to examine the relationship between the pressure drop across a membrane and the flux (flow per area) through the membrane. We observe the following 10 related values of pressure (x) and flux (y): 1 2 3 4 5 7 8. 9 10 Pressure (x) 1.02 2.08 2.89 4.01 5.32 5.83 7.26 7.96 | 9.11 9.99 Flux (y) 1.15 0.85 1.56 1.72 4.32 5.07 5.00 5.31 6.17 7.04 (a) Fit the least square regression equation to predict the flux (flow per area) through the pressure drop across a membrane. (b) Find the estimated flux when the pressure drop across a membrane is 4.50. (c) Calculate the coefficient of correlation. Interpret your result. (d) Given Sxx = 83.25961 and Se = 0.64460653. Test, at the 0.01 level of significance, whether there is linear relationship between the pressure drop across a membrane and the flux (flow per area) through the membrane. (e) Construct a 98% confidence interval for the mean flux for the…
The efficiency for a steel specimen immersed in a phosphating tank is the weight of the phosphate coating divided by the metal loss (both in mg/ft?). An article gave the accompanying data on tank temperature (x) and efficiency ratio (y). Temp. 173 175 176 177 177 178 179 180 Ratio 0.94 1.21 1.44 1.05 1.09 1.02 0.96 1.88 Temp. 183 183 183 183 183 184 184 185 Ratio 1.53 1.50 1.57 2.07 2.05 0.86 1.53 0.80 Temp. 185 185 185 187 187 188 189 191 Ratio 1.71 1.96 2.76 1.59 2.60 3.10 1.81 3.18 In USE SALT (a) Determine the equation of the estimated regression line. (Round all numerical values to four decimal places.) (b) Calculate a point estimate for true average efficiency ratio when tank temperature is 185. (Round your answer to four decimal places.) (c) Calculate the values of the residuals from the least squares line for the four observations for which temperature is 185. (Round your answers to two decimal places.) (185, 0.80) (185, 1.71) (185, 1.96) (185, 2.76) Why do they not all have…
Can balloons hold more air or more water before bursting? A student purchased a large bag of 12-inch balloons. He randomly selected 10 balloons from the bag and then randomly assigned half of them to be filled with air until bursting and the other half to be filled with water until bursting. He used devices to measure the amount of air and water was dispensed until the balloons burst. Here are the data
Water is flowing into a tub for washing clothes. The table shows the rate at which the water flows, in gallons per minute. The tub initially had five gallons of water in it before the faucet was turned on. t, in minutes 0 0.5 1 1.5 2 2.5 3 3.5 Flow rate, in 0.5 1 1.2 1.4 1.7 2 gal/min 2.1 3 Use the information in this problem to determine the amount of water in the tub after the first 3 minutes have passed. a) Calculate the amount of water in the tub using left approximating rectangles. b) Calculate the amount of water in the tub using right approximating rectangles. c) Use the two answers above to determine the most accurate answer you can.
Use the table to estimate the rate of change of y at the specified value of x. X=1

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