2. Kelly Sanchez is a college senior who is interviewing at several companies fora managerial position. As she tours the office at ABC Corporation, she noticesthat some seem to be much than others, and she wonders if there's arelationship between the number of years a person has spent at the companyand the width of that person's office space. A random sample produces thefollowing data pairs where x is the number of years a person spent at thecompany and y is the width in feet of the person's office space.3167415759.440169.38161710152619121310417517423025204517Find the followinga. Write the equation for the line of regressionb. Predict the width of the office space for a person who has beenwith the company for 18 yearsc. Predict the width of the office space for a person who has beenwith the company for 27 yearsd. Calculate the standard error of estimate

Comment: As per the our company guidelines we are supposed to answer only three subparts. Kindly…

Answered: 2. Kelly Sanchez is a college senior…

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 price drivers pay for gasoline often varies a great deal across regions throughout the United States. The following data show the price per gallon for regular gasoline for a random sample of gasoline service stations for three major brands of gasoline (Shell, BP, and Marathon) located in eleven metropolitan areas across the upper Midwest region (OhioGasPrices.com website, March 18, 2012). Click on the datafile logo to reference the data. DATA file Shell BP Metropolitan Area Marathon Akron, Ohio Cincinnati, Ohio Cleveland, Ohio Columbus, Ohio Ft. Wayne, Indiana Indianapolis, Indiana Lansing, Michigan Lexington, Kentucky Louisville, Kentucky Muncie, Indiana Toledo, Ohio 3.77 3.72 3.87 3.76 3.78 3.87 3.89 3.79 3.83 3.83 3.85 3.77 3.83 3.85 3.93 3.84 3.84 4.04 3.87 3.87 3.99 3.79 3.78 3.81 3.69 3.78 3.84 3.84 3.83 3.79 3.79 3.86 3.86 Use a = .05 to test for any significant difference in the mean price of gasoline for the three brands. Round SS to 6 decimals, MS to 6 decimals, F to 2…
The following data are the ages at which a sample of 35 American mothers first gave birth: 20 28 33 33 21 18 24 20 32 16 27 21 17 22 19 40 19 24 24 24 17 31 28 26 18 23 20 18 14 16 21 16 20 20 19 If you were to create a stem-and-leaf plot, how many stems would there be? Explain.
3. Correlation and linear regression
Questions 1, 2 and 3. In a survey of daily internet game time usage by college school students, a sample of 7 students provided the following data: 3 1.5 2.2 1.5 0.5 2.5 1 Find the mean of the data.
11. A manager of a department times how many hours each person works within her department. 43 42 24 50 41 28 47 47 39 59 29 31 39 42 What is the mean and median of the data? Group of answer choices Mean = 40.1; Median = 41.5 Mean = 40.0; Median = 42.5 Mean = 40; Median = 42 Mean = 40.8; Median = 47
Males 74 75 69 72 75 73 88 76 71 64 67 71 72 82 71 83 82 78 80 81 75 Females 75 57 61 71 79 78 81 65 57 80 73 83 86 79 65 70 69 76 55 66 79 5. Construct stem-and-leaf plots for each data set using four stems. You should have two separate plots: one for men and one for women. 6. Why is it important to have the same stems for both plots, even though one plot has an empty stem? 7. Comment on the distributions. What type on conclusions can you make about the heart rates of males and females? Do they appear to be very different?
4. Draw a line / curve of best fit for the following sets of data & identify if they are linear, quadratic or exponential: 2500 1500 1000 500 300 200 -100 25 50
Below are numbers of hours that a sample of 18 recent college graduates reported working last week. 55 48 46 64 68 43 37 44 63 54 45 48 52 39 50 51 65 38 Construct a box and whisker plot for the data.
If two large random samples are drawn from two populations, each having a mean of $100, the relevant sampling distribution of their difference has a mean of a. 200 b. The Sum of the 2 Sample Means C. 0 D. The difference between the two sample means.

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