What is the implication of the (sometimes extreme) redshifts of nearly all galaxies observed in the night sky? If a good representative of a data set of galaxies shows us that the galaxy seems to be receding at a rate of 4000 km/s and the distance to that galaxy is determined to be 20 megaparsecs (Mpc), what would the Hubble constant of that universe be? Again, note that this is just an example, not the Hubble constant found for our universe. Please remember that you must include units in your final answer.

What is the implication of the (sometimes extreme) redshifts of nearly all galaxies observed in the night sky? If a good representative of a data set of galaxies shows us that the galaxy seems to be receding at a rate of 4000 km/s and the distance to that galaxy is determined to be 20 megaparsecs (Mpc), what would the Hubble constant of that universe be? Again, note that this is just an example, not the Hubble constant found for our universe. Please remember that you must include units in your final answer.

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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Chapter 08, Section 8.3, Problem 032c Find to 3 decimal places the value of t for the t distribution for the following. Area in the left tail = 0.005 and n = 29. the tolerance is +/-2% powered by MapleNet on a ion tion 19 ection 22 nt Privacy Policy 2000-2020 Jol Wiley & Sons, Inc. All Rights Reserved. A Division of John Wiley & Sons, In-
Question 3 122 students at a college were asked whether they had completed their required English 101 course, and 79 students said "yes". Find the best point estimate for the proportion of students at the college who have completed their required English 101 course. Round to four decimal places.
The following table gives the millions of metric tons of carbon dioxide emissions in a certain country for selected years from 2010 and projected to 2032. 2012 2014 2016 2018 2020 CO2 Emissions 338.5 364.5 397.1 423.8 452.1 498.4 Year 2010 Year 2022 2024 2026 2028 2030 CO2 Emissions 557.2 592.9 628.7 662.1 707.1 (a) Create a linear function that models these data, with x as the number of years past 2010 and y as the millions of metric tons of carbon dioxide emissions. (Round all numerical values to two decimal places.) y(x) = 2032 741.7 (b) Find the model's estimate for the 2024 data point. (Round your answer to two decimal places.) million metric tons Interpret the slope of the linear model. For each year since ---Select--- (c) Find the slope of the linear model. (Round your answer to two decimal places.) , carbon dioxide emissions in the U.S. are expected to change by million metric tons.
QUESTION 3 The Zika virus (ZIKV) is a mosquito-borne disease, which is transmitted by some species of Aedes mosquito, particularly Aedes aegypti. The adult life span of Aedes aegypti can range from two weeks to a month depending on environmental conditions. An experiment to investigate the effects of temperature on Aedes aegypti measures the lifespan of a sample of six individual mosquitoes (in days) to be 20.3 18.7 17 18.2 25.4 17.6 The sample standard deviation for a sample of N measurements is given by the formula E (x - x)? ON-1= N-1 Calculate the sample standard deviation of this sample in days, expressed to two significant figures.
At wind speeds above 1000 centimeters per second (cm/sec), significant sand-moving events begin to occur. Wind speeds below 1000 cm/sec deposit sand and wind speeds above 1000 cm/sec move sand to new locations. The cyclic nature of wind and moving sand determines the shape and location of large dunes. At a test site, the prevailing direction of the wind did not change noticeably. However, the velocity did change. Sixty-three wind speed readings gave an average velocity of x = 1075 cm/sec. Based on long-term experience, ? can be assumed to be 255 cm/sec.
Question 4 - 6 refer to following variables: Dependent variable: Sentence Months Independent variable: Year of Education Predict the sentence months for 6 years of education (Round off to two decimal places if necessary).
At wind speeds above 1000 centimeters per second (cm/sec), significant sand-moving events begin to occur. Wind speeds below 1000 cm/sec deposit sand and wind speeds above 1000 cm/sec move sand to new locations. The cyclic nature of wind and moving sand determines the shape and location of large dunes. At a test site, the prevailing direction of the wind did not change noticeably. However, the velocity did change. Sixty-five wind speed readings gave an average velocity of x = 1075 cm/sec. Based on long-term experience, ? can be assumed to be 255 cm/sec. (a) Find a 95% confidence interval for the population mean wind speed at this site. (Round your answers to the nearest whole number.) lower limit ______cm/sec upper limit _____cm/sec
QUESTION 7 A graduate school program in Statistics will only admit students with GRE quan- titative scores in the top 20%. GRE scores from previous years are found to be approximately Gaussian with median 158 and standard deviation 3. What is the lowest GRE score it will accept? 158.6 155.47 140.40 160.54
Question 6 of 14 Identify the reasons the following statements are incorrect. Not all reasons will be used. Researchers found that the correlation between the number of vacation days available per year and the employees' years of employment is r = 0.65 days. The correlation between the average lifespans of animals and the animals' species is r = -0.78. The number of steps people take while walking and the distance they walk are highly correlated (r = 1.12). The correlation between average gas mileage in miles per gallon and average highway speeds in miles per hour differs from the correlation between average gas mileage in miles per gallon and average highway speeds in kilometers per hour. Answer Bank Correlation should be between -1 and 1. Correlation should depend on units. Correlation should be greater than 0. Correlation should not depend on units. One of the variables should be categorical. Both variables should be numerical.
Question 2 A transdermal patch is designed to ease the Alzheimer's symptoms. These patches work by releasing a controlled amount of Exelon drugs through skin, which help to avoid gastrointestinal side effects such as nausea and vomiting if consumed as pills. The data below shows the mass flux of Exelon drug being delivered through the skin as a function of time: Time, / (Hour) Flux, (mg/(cm³ hour)) 4 16.5 8 11 12 16 5.5 3.5 20 2.5 Use the fourth-order Lagrange's interpolating polynomial to estimate the mass flux of Exelon drug being delivered through the skin after 15 hours of using the patch.
Question 8 of 8 For the past seven years, the sales of Departments A, B, and C have maintained a relatively stable ratio of 4 :2:1. Department A is predicting that their sales will be $500,000 next year. Based on their past sales ratio, what sales would be predicted for Department B?
Consider the following table that gives the population of City A from Year 1 to Year 6. Complete all parts (a-k) to this question. Part 1: Fill-in the last two columns in the table. List your answers as a - j for the chart and answer the question k below. Round growth rate to the nearest ten-thousandth (4 decimal places). Population of City A, Year 1 to year 6 Year Population (P) Change ΔP{"version":"1.1","math":"<math xmlns="http://www.w3.org/1998/Math/MathML"><mo>∆</mo><mi>P</mi></math>"} Growth Rate ΔPP{"version":"1.1","math":"<math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mrow><mo>∆</mo><mi>P</mi></mrow><mi>P</mi></mfrac></math>"} 1 315,422 N/A N/A 2 320,421 a. b. 3 321,765 c. d. 4 322,162 e. f. 5 331,165 g. h. 6 331,200 i. j. Part 2: k. Does it make sense to fit this data with an exponential model? Why or why…