1. The data below give the population of the United States from 1800 to 2000. Model thepopulation (in thousands) as a function of the year. Fit a one-term model on the givendata. Is the model appropriate for these data? Why? Show the necessary plots.YearPopulation (thousands)1800530818209638186031443188050156190075995184017069Year192019401960198019902000Population (thousands) 105711131669179323 226505248710 281416

The independent variable is Year. The dependent variable is Population. This is simple linear…

Answered: 1. The data below give the population…

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. run a simple regression- dependent variable is Weeks, independent variable is Age. B. run a multiple regression with dependent variable weeks and independent variable-age, married, head, manager and sales. C. Create the regular and standardized residual plots for both. Please show the tables when entering values of the regression for both the outputs and the scatter plots.
SON ********** b. Do the organic Dr. Stephanie Andrews (5) Researchers from the University of Miami found that a person's GPA in high school could be an indicator of how much that person will earn later in life. The chart below depicts the findings of the study. Average annual earnings in adulthood, by high school GPA Men $50,000 40,000 30,000 20,000 10,000 0 0.0 Women 0.5 1.0 1.5 2.0 2.5 HIGH SCHOOL GPA SOURCE: University of Miami GRAPHIC: The Washington Post. Published May 20, 2014 3.0 3.5 4.0 4 a. Consider the two variables, High School GPA and Average Annual Earnings in Adulthood. Which is dependent? b. Describe the relationship between High School GPA and Average Annual Earnings in Adulthood. Is the correlation positive or negative? (Write at least two sentences.) c. Does a person's High School GPA cause them to earn a certain salary in adulthood? Explain. (Write at least one sentence.) sta tement
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A study was done to look at the relationship between number of vacation days employees take each year and the number of sick days they take each year. The results of the survey are shown below. Vacation Days 5 15 13 3 9 0 3 7 7 14 4 Sick Days 5 5 1 5 4 9 9 6 5 3 9 Use the model to predict the number of sick days taken for an employee who took 3 vacation days this year.Sick Days = ? (Please round your answer to the nearest whole number.) Interpret the slope of the regression line in the context of the question: As x goes up, y goes down. The slope has no practical meaning since a negative number cannot occur with vacation days and sick days. For every additional vacation day taken, employees tend to take on average 0.40 fewer sick days. Interpret the y-intercept in the context of the question: The y-intercept has no practical meaning for this study. If an employee takes no vacation days, then that employee will take 8 sick days. The average number of sick days is…
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Find a 96% confidence interval for Hg. Let µa = H1 - H2, where u, is the mean solar energy generated for the east-west highways and µ, is the mean solar energy generated for the north-south highways. (Round to one decimal place as needed.)
Average Age and Length of Service Is the average age of armed services personnel related to the average amount of length of service in months? The data are shown. Age Time Send data to Excel Part: 0 / 5 25.1 25.2 25.8 27 27.1 66.5 70.1 74 89 82 Part 1 of 5 (a) Draw the scatter plot for the variables.
The table gives information about the number of people staying in a hotel each quarter in 2020 and in 2021.Calculate the 4-point moving averages for this information. year 2020 2021 quarter 1 2 3 4 1 2 3 4 people 261 353 372 290 193 309 292 202
DATA file Autoinsurance 20. Assignment 3 The average annual premium for automobile insurance in the United States is $1503 (Insure.com website, March 6, 2014). The following annual premiums ($) are representa- tive of the website's findings for the state of Michigan. 1905 2725 2677 2600 2962 2184 2332 3112 2545 2525 2370 2545 2529 2442 2312 2981 2627 2857 2675 2115 Assume the population is approximately normal. a. Provide a point estimate of the mean annual automobile insurance premium in Michigan. b. Develop a 95% confidence interval for the mean annual automobile insurance pre- mium in Michigan. C. Does the 95% confidence interval for the annual automobile insurance premium in Michigan include the national average for the United States? What is your interpreta- tion of the relationship between auto insurance premiums in Michigan and the national average?
The scatter plot shows the relationship between the number of minutes studying for a test (x) and the Score earned (y). Make a scatterplot for the data. Time Studying (x) 40 50 60 70 80 90 100 110 Score (y) 2 3 6 7 9. +H+ 10 6. -7- 4 3 1- 10, 10 20 30 40 50 60 70 80 90 100 110 12 7:04 PM Desktop 12/8/2026
Ozone levels (in parts per billion, ppb) were recorded at sites in New Jersey monthly between 1926 and 1971. Here are boxplots of the data for each month The month of Ozone (ppb) 440- 400- The month of 360- 320- 280- 240 1 L TH OHH OHH a) In what month was the highest ozone level ever recorded? The highest ozone level ever was recorded in b) Which month has the largest IQR? c) Which month has the smallest range? • HIH • has the largest IQR. HOH O HH 2 3 4 5 6 7 8 9 Month has the smallest range. d) Write a brief comparison of the ozone levels in January and June. Choose the correct answer below. OA. The median ozone level in June was slightly lower than the median ozone level in January and the IQR was significantly smaller. OB. The median ozone level in June was slightly higher than the median ozone level in January, but the IQR was significantly smaller. OHH OC. The median ozone level in June was slightly lower than the median ozone level in January, but the IQR was significantly…
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