d. Find SST.e. Find SSR.f. Find SSE. 1. We are interested in determining if attendance affects a student's overall course grade. The following data from 10students is provided:Attendance %Overall Grade %5038.867553.418462.37568.188275.558483.196784.378887.037391.2610098.76

Answered: Image /qna-images/answer/009e5bfc-300c-4762-a574-fb3a27b5e760.jpg

Answered: 1. We are interested in determining if…

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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1. We are interested in determining if absences from a class affect your overall class grade. The following data from 10 students is provided: Absences Grade 89.2 1 83.7 83.5 81.1 4 78.2 73.9 6 64.3 7 71.8 8 55.9 65.2
The alcohol content of wine depends on the grape variety, the way in which the wine is produced from the grapes, the weather, and other influences. Here are data on the percent of alcohol in wine produced from the same grape variety in the same year by 16 winemakers in the same region of Italy: 12.86 12.88 12.81 12.70 12.51 12.60 12.25 12.53 13.49 12.84 12.93 13.36 13.52 13.62 12.25 13.16 Give a 95% confidence interval for the mean alcohol content of wine of this type.
1. There is a group of data as follows: 83 75 66 26 37 87 24 77 90 84 34 22 31 68 92 46 81 41 Question: a. Calculate what the value of the location data is, where 37% of the data is below it. b. Calculate the value of the location data, where 25% of the data is above it.
What is the answer to part D?
A Statistics class reports the following data on Sex and Eye Color for students in the class: Green/Hazel/Other Total Blue 8 Brown 20 34 4 16 32 36 66 Males Females Total 12 16 12 18 a. What percent of the blue-eyed students are male? type your answer... % b. What percent of the class are blue-eyed males? % type your answer... c. What percent of the male students have blue eyes? type your answer... % d. What percent of the students who do not have blue eyes are females? % type your answer... e. What's the conditional distribution of sex for the brown-eyed students? Male: type your answer... % Female: type your answer... % f. What's the conditional distribution of Eye Color for the males? Blue: type your answer... Brown: type your answer... % %
Provide the necessary answer needed WITH a complete solution.
The following data, taken from 8 towns in Alberta, are the percentage of residents who are university graduates and the median household incomes (in $ 1000's) for all households in each town. Graduates (%) Median Income ($ 1000) 47.6 34.1 31.5 41.3 34.5 28.1 23.1 20.4 61.7 50.9 57.1 56.4 42.8 42.1 33.2 19.2 Use two-decimal places in your answers. 4 (a) State the slope term and the Y -intercept term of the least squares regression line which attempts to predict the median income of a town in Alberta based on its linear relationship with the percentage of residents who are university graduates. (b) Find the correlation coefficient. (c) As the percenage of university graduates increases by 10%, the median income will change (in $ 1000s) by (make sure you include the positive or negative sign) (d) What percentage of the variation in the variable Median Income is not explained by its linear relationship to the variable Percentage of University Graduates? Use at least one place after the…
Different regions in the country spend contrasting amounts on advertising to encourage members of the public to donate blood. The following data were collected last year on the monies spent for marketing by fourteen (14) regions and the actual blood donations received. Region Marketing Spend ($000) x Total Blood Donations у 3.8 52 4.2 72 8.6 166 7.4 198 5.6 130 5.6 150 3.0 98 7.0 174 4.6 130 6.6 244 6.8 134 8.2 158 8.0 292 4.6 166 The following summary statistics have been calculated: Ex = 84 ; Ey = 2164 ; Ex² = 544.88 ; Ey² = 386,104.00 ; Σχν - 13,987.60 ; ESSXX = 40.88 ; ESSyy = 51,611.43 ; ESSxy= 1,003.60 x = 6 = 154.57 (a) Find the equation of the least squares regression line. (b) Identify one point on your least squares regression line. (c) Calculate the correlation coefficient "r" and interpret the result. (d) Calculate the r2 value and interpret the result. (e) How many blood donations would you expect a region to receive if they spent $5,100 per year on marketing?
A sample of 35 liberal-arts graduates yielded the following starting annual salaries. Data are in thousands of dollars, rounded to the nearest hundred dollars. 49.0 45.8 50.3 49.6 50.0 47.7 51.8 47.3 46.7 47.0 48.1 50.1 43.6 48.0 47.7 49.8 46.4 46.1 48.5 48.9 48.2 48.1 46.2 47.3 51.7 49.0 48.2 49.9 48.1 49.8 49.5 50.4 45.3 45.3 46.5 Construct a stem-and-leaf plot on a separate sheet of paper and answer the following questions based on your plot. a) Yes or No, the stems range from 43 to 51, inclusive. b) Yes or No, The stem 44 has no values associated with it. c) Yes or No, There are no commas in my stem and leaf plot. c) What is the shape of the distribution?
Let x be the percentage of 16- to 19-year-olds not in school and not high school graduates. Let y be the reported violent crimes per 1000 residents. Six small cities in Arkansas (Blytheville, El Dorado, Hot Springs, Jonesboro, Rogers, and Russellville) reported the following information about x and y. x 24.2 18.6 17.8 14.9 19.0 17.5 y 13.0 4.6 8.8 1.3 0.8 3.6 Complete parts (a) through (e), given Σx = 112, Σy = 32.1, Σx2 = 2137.7, Σy2 = 282.89, Σxy = 654.37, and r ≈ 0.763. (b) Verify the given sums Σx, Σy, Σx2, Σy2, Σxy, and the value of the sample correlation coefficient r. (Round your value for r to three decimal places.) Σx = Σy = Σx2 = Σy2 = Σxy = r = (c) Find x, and y. Then find the equation of the least-squares line = a + bx. (Round your answers for x and y to two decimal places. Round your answers for a and b to three decimal places.) x = y = = + x

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1. We are interested in determining if attendance affects a student's overall course grade. The followlg dala students is provided: 田 Attendance % Overall Grade % 50 38.86 75 53.41 84 62.3 75 68.18 82 75.55 84 83.19 67 84.37 88 87.03 73 91.26 100 98.76