Use a spreadsheet or some other method to complete the given table.Р(х, у) %3 х — 0.2у + 0.85ху1020304010203040

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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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A wildlife biologist has spent the past 5 years studying the relationship between the length (inches) and the average weight (lb) of the striped bass. His results are summarized in the table below. Length (inches) 14 18 22 26 Weight (lb) 3 |11 14 Find the least squares regression line y = ax + b for the data in the table, where x represents the length of the fish in inches and y represents the weight in pounds. Use this regression line to estimate the average weight of a striped bass that is 21 inches in length. Oy=0.75(21) - 9.5 = 6.25 lb O y = 0.65(21) - 10.5 = 3.15 lb y = 0.95(21) - 10.5 = 9.45 lb y = 0.95(21)-8.5 = 11.45 lb y = 0.85(21) 12.5 = 5.35 lb
How many songs can a digital music player hold? The data below represent the memory x and the number of songs n. Complete parts (a) through (f) below. O A. O B. Memory, x (gigabytes) Number of Songs, An 19500- An 80어 8 1950 16 3900 32 7800 64 15600 80 19500 ..... Oc. (a) Plot the ordered pairs (x,n) in a Cartesian plane. Choose the correct graph on the right. An 80- An 19500- (b) Show that the number of songs n is a linear function of the memory x. A linear function has a constant average rate of change. The average rate of change between (8,1950) and (16,3900) is 19500 80 (Type an integer or a decimal.)
Commercial apple trees usually consist of two parts grafted together. The upper part, or graft, determines the character of the fruit, while the root stock determines the size of the tree.† The following data are from two root stocks, A and B. The data represent total extension growth (in meters) of the grafts after 4 years. Stock A 2.52 2.26 2.86 2.91 2.78 2.58 1.96 2.10 3.41 2.94 2.88 Stock B 2.81 3.02 1.94 2.37 3.11 2.71 2.74 2.44 2.13 1.58 2.77 Use a 1% level of significance and the rank-sum test to test the claim that the distributions of growths are different for root stocks A and B. Interpret the results.What is the level of significance? Compute the sample test statistic. (Round your answer to two decimal places.) Find the P-value of the sample test statistic. (Round your answer to four decimal places.)
you take a bar of soap and weigh it after each shower. will the regression line be positive or negative
Below is data for two variables, X and Y. Answer the questions that follow. X Y X-MX Y-MY (X-MX)2 (Y-MY)2 (X-MX)(Y-MY) 3 3 -2 -1 4 1 2 4 3 -1 -1 1 1 ___ 6 4 1 ___ 1 0 0 7 6 2 2 ___ 4 4 What is the missing value under the Y-MY column?
find the equation of the regression line. Round to 3 decimal places.
Suppose that in R we have loaded the cps dataset, which contains the variables wage, educ, and exper. We want to run a regression of wage on edục and exper and save the output in a variable called regout. What is the correct command for this operation? O a. regout = 1m(wage = educ + exper, data = cps) O b. 1m(wage educ + exper, data = cps) 1m(wage educ + exper, data = cps) O e. regout <- lm(wage - educ + exper, data = cps) Clear my choice
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A student used multiple regression analysis to study how family spending (y) is influenced by income (X1), family size (x2), and additions to savings (x3). The variables y, x1, and x3 are measured in thousands of dollars. The following results were obtained.
Below is data for two variables, X and Y. Answer the questions that follow. X Y X-MX Y-MY (X-MX)2 (Y-MY)2 (X-MX)(Y-MY) 3 3 -2 -1 4 1 2 4 3 -1 -1 1 1 ___ 6 4 1 ___ 1 0 0 7 6 2 2 ___ 4 4 r = ____
The data indicate the number of wins and the number of goals scored for teams in the National Hockey League after the first month of the season. No. of wins, x B 5 6 9 10 0.885 Part: 0/3 9 Part 1 of 3 5 3 No. of goals, y 10 16 20 23 28 21 11 12 No. of wins, x 11 7 13 5 7 No. of goals, y 20 11 10 20 29 12 17 (a) Find the equation of regression line and draw the line on the scatter plot, but only if r is significant. Round the slope and y-intercept to four decimal places, if necessary. r (Choose one) significant at the 5% level. X
Data in the table comes from the NASA Global Climate Change website. It gives the average globaltemperature, in Celsius, for the given year. Use both rows for your calculations. For this problem, youwill see how well year correlates with the average temperature. Let ? be the number of years since1984 and ? be the average global temperature in degrees Celsius.Year 1984 1986 1988 1990 1992 1994 1996 1998 2000Temp 0.16 0.18 0.38 0.45 0.22 0.31 0.33 0.61 0.40Year 2002 2004 2006 2008 2010 2012 2014 2016 2018Temp 0.63 0.54 0.64 0.54 0.72 0.64 0.75 1.02 0.85a. Make a scatterplot of the data. Being sure to clearly label each axis. Keep in mind howeach variable is defined. Based on this scatterplot, is a linear model reasonable for this data set?Briefly explain.b. Determine the correlation coefficient for this data. Interpret this value in context.c. Determine the coefficient of determination for this data. Interpret this value incontext.d.State the regression line for the data.e. What does the…

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Use a spreadsheet or some other method to complete the given table. Р(х, у) %3 х — 0.2у + 0.85ху X → 10 20 30 40 10 20 30 40