4. Residuals are...the difference between observedand valuesthe model.B. data collected from individuals that is not consistent with the rest of the group.C. none of theseD. possible models not explored by the researcher.E. variation in the data that is explained by the model.5. If the point in the upper right corner of this scatterplot is removed from the data set, thenwhat will happen to the slope of the line of best fit (b) and to the correlation (r)?A. b will increase, and r will decrease.b will decrease, and r will increase.C. both will decrease.D. both will increase.E. both will remain the same.6 An 8th grade class develops a linear model that predicts the number of cheerios (a smallround cereal) that fit on the circumference of a plate by using the diameter in inches. Theirmodel is: # cheerios = 0.56 +5.11(diameter).The slope of this model is best interpreted in context as...A. For every 5.11 inches of diameter, the circumference is about 1 cheerio bigger.B. For every 1 inch of diameter, the circumference holds about 0.56 more cheerios.C. It takes 5.11 cheerios to fill a plate' s circumference.For every 1 inch of diameter, the circumference holds about 5.11 more cheerios.E. A mistake, because л is about 3.14 and that should be the slope.

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Answered: 4. Residuals are... the difference…

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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Mr. James, president of Daniel-James Financial Services, believes that there is a relationship between the number of client contacts and the dollar amount of sales. To document this assertion, he gathered the following information from a sample of clients for the last month. Let X represent the number of times that the client was contacted and Y represent the valye of sales ($1000) for each client sampled. Number of Contacts (X) Sales ($1000) 14 24 12 14 20 28 16 30 23 30 b) compute the correlation coefficient and coeffcient of determination. Interpret the coefficients.
Deal with it.I need the correct answer
2. (MMC 6.43). The Survey of Study Habits and Attitudes (SSHA) is a psychological test that measures the motivation, attitude toward school, and study habits of students. Each score ranges from 0 to 200. The mean attitude score for U.S. college students is about 110, and the standard deviation is about 25. A teacher who suspects that older students have better attitudes toward school gives the SSHA to 25 students who are at least 30 years of age. Their mean score is = 118.3. a. Assuming that o = 25 for the population of older students, carry out a test of Họ: H = Ha:u > 110 Report the P-value of your test and state your conclusion clearly. = 110 b. What are the required assumptions in part (a)?
The below sample data set shows the relationship between two variables. 10 8.04 8 6.95 13 7.58 6. 8.81 8.33 9.96 7.23 4.26 11 14 9. 4. 10.84 12 Determine the least squares regression line. A) -0.46 - 3.57x B) -0.46+ 3,57 C) v=3,57+0.461 D) =3.57-0.46A Tufen birin1 seçin
The data to the right represent the number of chocolate chips per cookie in a random sample of a name brand and a store brand. Complete parts (a) to (c) below. Full data set D Name Brand Store Brand 20 23 26 24 28 19 21 27 33 28 33 15 29 22 25 17 22 21 22 30 20 26 23 24 25 27 ... (a) Draw side-by-side boxplots for each brand of cookie. Label the boxplots "N" for the name brand and "S" for the store brand. Choose the correct answer below. OA. OB. OC. N- N- N- 10 20 30 40 10 20 30 40 10 20 30 40 (b) Does there appear to be a difference in the number of chips per cookie? O A. Yes. The store brand appears to have more chips per cookie. O B. No. There appears to be no difference in the number of chips per cookie. O C. Yes. The name brand appears to have more chips per cookie. O D. There is insufficient information to draw a conclusion. (c) Does one brand have a more consistent number of chips per cookie? O A. No. Both brands have roughly the same number of chips per cookie. O B. Yes. The…
Calculate the measures of central tendency for the grouped data and the measures of dispersion for the grouped and ungrouped data.After computing the measures of central tendency and dispersion, interpret the results.In a 50-question midterm exam, 40 students from the subject Creative Leadership at Angeles City University have their scores recorded. Given: r = 35 Class Interval = 6 i = 6 Lowest value = 13 and Highest value = 48 Data: Number Student’s name Midterm exam score 1 Olivia 18 2 Liam 23 3 Emma 18 4 Noah 18 5 Ava 19 6 Oliver 25 7 Sophia 25 8 Ethan 19 9 Isabella 19 10 Lucas 24 11 Mia 13 12 Mason 13 13 Charlotte 26 14 Benjamin 13 15 Amelia 27 16 William 15 17 Harper 26 18 James 17 19 Evelyn 20 20 Henry 20 21 Abigail 27 22 Sebastian 27 23 Emily 22 24 Alexander 28 25 Elizabeth…
Dr. Morgendorffer wants to develop a questionnaire that measures employees' burnout. But during her literature review, she learns that burnout is a variable with three separate dimensions: exhaustion, cynicism, and detachment. Which of the following checks will help ensure that Dr. Morgendorffer's burnout questionnaire is valid? O a. Ensuring that the items across all three dimensions are correlated with each other O b. Ensuring that there is a high level of stability for each of the three dimensions OC. Ensuring that the dimensions represent parallel forms of the questionnaire O d. Ensuring that all three dimensions have been adequately represented in the questionnaire
2. A law school releases admissions data from past years. The median score on the LSAT for accepted students was 167. (Scores on the LSAT range from 120 to 180 points.) The first and third quartiles of LSAT scores for accepted students were 155 and 173 points, respectively. (a) Roughly sketch a histogram for what the LSAT scores for accepted students might look like based on the information given. (b) Suppose you are applying to this law school, and you read about an experiment for a new LSAT test-preparation course. Two hundred students participated. Of these, 100 were randomly chosen to take the course. They got an average score of 166 points, with an SD of 17 points. The other 100 students did not take the course and studied on their own. They got an average score of 165 points, with an SD of 18 points. Calculate the two-sample z test statistic and p-value for the null hypothesis that the course does not affect scores.
Based on the scatterplot, describe the association between the two variables. Comment on form, direction, and strength.

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