5. Consider that in 1915 that the population in the United States was 100 million.Suppose the population at that time was growing at 1 million people per year; andthat by 1960 the population was 180 million with a growth rate of 2 million peryear. Determine both the limiting population M and the predicted population for theyear 2000 (making the needed assumptions).

Given In 1915, the population size=100 million In 1915, the growth rate=1 million people per year…

Answered: 5. Consider that in 1915 that the…

Linear Algebra: A Modern Introduction

4th Edition

ISBN:9781285463247

Author:David Poole

Publisher:David Poole

Chapter7: Distance And Approximation

Section7.3: Least Squares Approximation

Problem 33EQ

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1. The number of pounds of steam used per month by a chemical plant is thought to be related to the average ambient temperature (in degF) for that month. The past year's usage and temperature are shown in the following table: Month Temp. Usage/1000 Month Temp. Usage/1000 Jan. 21 185.79 July 68 621.55 Feb. 24 214.47 Aug. 74 675.06 Mar. 32 288.03 Sept. 62 562.03 Apr. 47 424.84 Oct. 50 452.93 May 50 454.58 Nov. 41 369.95 June 59 539.03 Dec. 30 273.98 (a) Assuming that a simple linear regression model is appropriate, fit the regression model relating steam usage (y) to the average temperature (x). (b) What is the estimate of expected steam usage when the average temperature is 55F?
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12) The following table gives the population (in millions) of Georgia and North Carolina in 1990 and 2009. Year Georgia North Carolina 1990 6.5 6.8 2009 9.8 9.4 Assume the population growth rates are linear. Find when the two states had equal populations and find that population.
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Problems 7, 8, 9 pertain to the following information. The health department of a combined city and county government seeks to determine the relationship between an air pollution index (on a scale of 0 to 10 from best to worst) and the number of admissions to area hospitals for acute respiratory distress. It collects data from 75 randomly selected days (the air pollution index z and the number of admissions y for each day) and computes: 3.0
19. The number of pounds of steam used per month by a chemical plant is thought to be related to the average ambient temperature (in °F) for that month. The past year's usage and temperatures are in the following table: Month Temp. Usage/1000 Jan. 21 185.79 Feb. 24 214.47 Mar. 32 288.03 Apr. 47 424.84 May 50 454.58 June 59 539.03 July 68 621.55 Aug. 74 675.06 Sept. 62 562.03 Oct. 50 452.93 Nov. 41 369.95 Dec. 30 273.98 (c) Find a 95% confidence interval on mean steam usage when the average temperature is 57°F. Round your answers to one decimal place (e.g. 98.7).
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1. The following data represent the operating time in hours for 4 types of pocket calculators before a recharge is required.Fx101 Fx202 Fx303 Fx404 6.4 5.9 7.1 5.3 6.1 5.8 7.1 4.9 6.5 5.9 7.2 6.1 6.2 5.1 7.3 7.1 6.3 5.0 7.4 4.9Test at 0.01 level of significance if the operating times for all four calculators are equal. Use 4 decimal placesSTATISTICS = _____COMPUTED VALUE = _____TABULAR VALUE = _____CONCLUSION = _____
5. Calculate the net reproduction rate from the following data : Age group of No. of female child-bearing females No. of survivors out of each 1,000 female children Age group of No. of female child-bearing children born females No. of survivors out of each 1,000 female children children born to 1,000 to 1,000 women women oub passing through each age group passing through each age group da15-20 50 850 35-40 300 650 20-25 180 800 40-45 100 600 25-30 450 750 45-50 40 500 30-35 500 700

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