B8. A shop owner would like to analyse the relationship between the temperature on anygiven day (in Celsius) and her revenues for selling lemonade. To this aim, she collectedthe following data for different days:Temperature, r | 5.2 5.4 8.3 12.1 15.3 18.1 21.2 25.4 28.2 31.7 36.19479Revenue (in $), y 78 121 101141 175160174150124Propose a linear regression model obtaining the line of regression for revenue giventemperature. Given the list of residuals r = -52.4148, r2 = -9.3647, r3 = -28.6375,TA = 12.3154, r5 = 47.1178, r6 = 32.8199, r7 = 47.5972, rg = 24.6504, rg = -0.6475,compute the last two residuals, r10 and r1, and plot all the residuals vs r. Do you thinkthis is a good model? Why/why not?Hint: You can use E = 5031.14, Eriyi = 26004.2, Ey = 190261.

The linear regression model is y = a + bx Here, a = intercept & b = slope, y =…

Answered: B8. A shop owner would like to analyse…

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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The following refer to the following data set: 92.2 119.4 119.4 72.8 88.2 119.4 88.9 99.6 109.4 96 What is the arithmetic mean of this data set? mean = What is the median of this data set? median = What is the mode of this data set? mode
Given the weekly price and quantity (Qx and (Px) data for Andy’s ice cream over the past 12 weeks and the price of another ice-cream flavor (Po) as: Qx 84 82 85 83 82 84 87 81 82 79 82 78 Px 8.50 9.00 8.75 9.25 9.50 9.25 8.25 10.00 10.00 10.50 9.50 10.25 Po 5.25 6.00 6.00 6.50 6.25 6.25 5.25 7.00 7.25 7.25 6.75 7.25 a. Use excel regression to estimate the weekly demand for Andy’s ice-cream (attach the output of the regression estimate (Hint: Use regression in excel to find the estimated demand function: Enter the data in excel, click on Data Analysis, and use the regression command). b. Are the coefficients on the two prices statistically significantly different from zero at the 5% significance level? How do you know? c. What the R2? d. Explain what R2 means.
The manager of a bank decide to compare the speed on the job of four tellers working in the bank. The following data give the amount of time (in minutes) that they spent serving their customers, picked at random. Teller 1 Teller 2 Teller 3 Teller 4 0.8 8.7 9.7 0.7 1.6 4.2 2.0 3.2 8.8 0.2 5.9 4.2 7.7 9.0 2.3 6.7 3.3 5.8 7.5 1.4 At c=0.01, what is the value of your Test Value or F? Select the correct response: 0.217 0.271 0.721
Solve the problem. The following data gives the number of applicants that applied for a job at a given company each month of 1999: 63, 70, 68, 74, 83, 77, 79, 86, 82, 68, 66, 63. What is the median of the data? O 72 O There is no median. O 70 O 74 W ASUS f4 f5 f6 f7 f8 口京 f9 f10 f11 & 4 7 8. 9. R T Y U 因 5 图

Suppose you pulled info regarding the sex of the victim and offender for murders in the United States. The data look something like this: Sex of Vic. Sex of Off. F M F 124 421 M 1609 3725 Assume that the sex of the victim is the response variable. What is the relative risk of being killed by female offender for male victims?
1. Describe in detail what the H0 and H1 are. 2. If this data were to be on a scatterplot, which variable would be x and which would be y? explain why.
The following data set are grades of students enrolled in Math 111. Dr. Glen, the professor for Math 111 wants to determine the following: Q3, D₂, D5, P45, and P85. Grades f cfb 91-94 6 77 87-90 15 71 83-86 10 56 79-82 15 46 75-78 8 31 71-74 9 23 67-70 10 14 63-66 4 4 TOTAL 77 use the formulas simmilar to the attached photo:
(e) Test the hypothesis Ho : B1 = 10 versus H1 :ß, # 10 using a = 0.01. Ho and conclude the slope v 10 at a = 0.01. (d) Test the hypothesis Ho : Bo = 0 versus H1 : Bo + 0 using a = 0.01. Ho and conclude that the intercept be included in the model.
For the following pairs of data points (10, 100), (8, 120), (5, 200), (4, 200), (10, 90), (7, 110), and (6, 150), the relationship between X and Y is a. Zero O b. None C. Positive d. Negative NEXT PAGE GE for anything acer
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