Temperatures: Following are average temperatures, in degrees Fahrenheit, during the months of January and July for 6 U.S. cities.CityAlbuquerqueNew OrleansClevelandBostonMinneapolisChicagoSend data to ExcelJanuary TemperatureJuly Temperature35.778.552.682.725.771.929.373.913.173.222.073.3Part: 0/4Part 1 of 4(a) Compute the least-squares regression line for predicting July temperature from January temperature.The equation for the least-squares regression line is y = ☐ . Round the slope and y-intercept to four decimal places as needed.

In this problem, we designated the January temperatures as x (the independent variable) since it is…

Answered: Temperatures: Following are average…

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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Percentages of public school students in fourth and eighth grades who were above the proficiency level were given for 8 western states 4th Grade Proficiency 8th Grade Proficiency Arizona 15 21 California 11 18 Hawaii 16 16 Montana 22 37 New Mexico 13 13 Oregon 21 32 Utah 23 26 Wyoming 19 25 Construct a scatterplot and comment on any interesting characteristics Find the least squares equation. If Nevada had a 4th grade proficiency of 14%, what would you expect the 8th grade proficiency to be?
Government funding: The following table presents the budget (in millions of dollars) for selected organizations that received U.S. government funding for arts and culture in both 2004 and 2006. Use a TI-84 calculator to answer the following. Organization 2004 2006 Smithsonian Institution 489 517 Corporation for Public Broadcasting 377 460 Institute of Museum and Library Services 262 247 Commission of Fine Arts 8 2 Advisory Council on Historic Preservation 4 5 Source: National Endowment for the Arts Compute the least-squares regression line for predicting the 2006 budget from the 2004 budget. Round the slope and y-intercept to at least four decimal places.
In order to study the relationship between age and length of time that a smoker has been smoking, the following data were collected. x= age of a smoker y= years since he or she started smoking. x = y= 26 8 32 9 27 7 24 6 34 10 20 4 Compute the coorelation and find the least squares line.
23 Determine, by means of the least squares method and assuming that the only significant errors are in the y values, the best straight line relationship to fit the following data: y 65 72 68 71 72 75 80 82 77 74 80 84 87 93 98 78 89 91 96 95
The following data show the number of hurricanes to directly strike the mainland U.S. each decade. A major hurricane is one with a strength rating of 3, 4 or 5. Decade Total Number of Hurricanes Number of Major Hurricanes 1941 – 1950 24 10 1951 – 1960 17 8 1961 – 1970 14 6 1971 – 1980 12 4 1981 – 1990 15 5 1991 – 2000 14 5 2001 – 2004 9 3 Using only completed decades (1941 – 2000), calculate the least squares line for the number of major hurricanes expected based on the total number of hurricanes. (Round your answers to three decimal places.) Using only completed decades (1941 – 2000), calculate the least squares line for the number of major hurricanes expected based on the total number of hurricanes. (Round your answers to three decimal places.)
Using only completed decades (1941 – 2000), calculate the least squares line for the number of major hurricanes expected based on the total number of hurricanes. (Round your answers to three decimal places.)
2. The Mach number of a moving object is the ratio of its speedto the speed of sound. The following table shows the speeds of a jet aircraft, in terms of Mach numbers, and the time tafter it starts to accelerate. Find the least- squares line of s as a function of t. t(min) 0.00 s(Mach Number) 0.88 0.60 0.97 1.20 1.03 1.80 1.11 2.40 1.19 3.00 1.25
The following table shows the number of salesmen working for a certain concern : 1982 46 1983 1984 ´Year Number 1980 28 1981 38 40 56 Use the method of least squares to fit a straight line and estimate the number of salesmen for 1985 and 1986.
The following table gives the gold medal times for every other Summer Olympics for the women's 100 meter freestyle (swimming). Year Time (seconds) 1912 82.2 1924 72.4 1932 66.8 1952 66.8 1960 61.2 1968 60.0 1976 55.65 1984 55.92 1992 54.64 2000 53.8 2008 53.1 Calculate the least squares line. Put the equation in the form of: ŷ = a + bx. (Round your answers to three decimal places.) Find the correlation coefficient r. (Round your answer to four decimal places.)r = Find the estimated gold medal time for 1924. (Use your equation from part (d). Round your answer to two decimal places.) Find the estimated gold medal time for 1992. (Use your equation from part (d). Round your answer to two decimal places.) Use the least squares line to estimate the gold medal time for the 2012 Summer Olympics. (Use your equation from part (d). Round your answer to two decimal places.) ch12#1
he following data represents the annual sales of a Digitech Automation products SAOG. Year 2014 2015 2016 2017 2018 Sales (in Millions) OMR 380 440 520 396 514 Use method of least squares to calculate the trend values and the forecast for the future period. Which of the following is the annual sales forecast for the year 2020 using least squares method? a. 584.4 Million OMR b. 539.6 Million OMR c. 606.8 Million OMR d. 562 Million OMR
Lse five decimal places Fit the following data by the equation y=- ax using the Least squares method 2 4 10 13 15 32 40 124
[sauio DETAILS TANAPMATH7 2.8.009.MI. MY NOTES ASK Facebook Users End-of-year data for the number of users (in millions) of a certain social media site from 2008 through 2011 are given in the following table. Year 2008 2009 2010 2011 Number, y 140.5 332.4 645.3 856 (a) Letting x = 0 denote the end of 2008, find an equation of the least-squares line y for these data. y = 245.94x – 493722.88 (b) Use the result of part (a) to project the number of users (in millions of users) the social media site has at the end of 2017, assuming that the trend continued. million users Viewing Saved Work Revert to Last Response Submit Answer

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