In an attempt to predict the growth of the population of the U.S. biologist studied census records from 1780 through 1940. They developed the logistic formula
N= 182/1+66,7e^-0.03t
Here N is the U.S population in millions and t is time (measured in years since 1780)
a- What is the carrying capacity for the population?
b- at what population is the fastest growth? describe where the fastest growth occurs on a logistic models graph.
c- How fast must the wind blow in order to generate 38 watts of power? round two decimal places.
d- If wind speed increases by a factor of 4, how much power is generated? round two decimal places.
e- if the power increases by a factor of 2, how much more wind speed must there be? round to two decimal places.
Trending nowThis is a popular solution!
Step by stepSolved in 3 steps with 2 images
- 3. In the logarithmic equation y logax, which variable(s) cannot have a negative value? Explain. rarrow_forwardWhen first observed, an oil spill covers 8 square miles. Measurements show that the area is tripling every 6 hrs. an exponential model for the area A (in mi2) of the oil spill as a function of time t (in hr) from the beginning of the spill.arrow_forwardThe logarithmic function that models the data, is y = -676.566 + 249.889 ln(x), where x is the age or younger and y is the percent who have been sexually active. Use the model to estimate the percent of girls age 18 or younger who have been sexually active.arrow_forward
- In the early 1980s, AIDS (Acquired Immune Deficiency Syndrome) spread rapidly. A logistic curve modeling the spread of the disease in the United States is given by 47500 P(t) = 1+ 148.41e-0.8t where t is measured in years since 1981 and P is the number of reported cases. In what year does this model predict that the number of new cases will be growing at the largest rate? Remember to fully justify your answer.arrow_forwardFake a dataset using a logit model with 20 observations, 1 independent variable whose values are natural numbers between 1 and 5, (odds(x+1)/odds(x)) =1.139, and p=0.52. Show a screenshot of your dataset.arrow_forwardlogaM/x=logaM1/x Is it true or false?arrow_forward
- Logarithmic Differentiation. Thank youarrow_forwardA culture of bacteria undergoes exponential growth according to the equation below, where t is given in hours, and the bacteria are measured in thousands y = 150 (3)¹ a) How much bacteria is present after 2 hours? b) When will there be 300 bacteria? Express your answer in terms of logarithms.arrow_forwardData collected on annual GNP (gross national product, in billions of dollars) in the United States were used to develop the following prediction equation for a given Year. log10GNP = -26.1 + 0.0148*Year The predicted GNP (in dollars) for Year = 2008 is ________________________.arrow_forward
- Advanced Engineering MathematicsAdvanced MathISBN:9780470458365Author:Erwin KreyszigPublisher:Wiley, John & Sons, IncorporatedNumerical Methods for EngineersAdvanced MathISBN:9780073397924Author:Steven C. Chapra Dr., Raymond P. CanalePublisher:McGraw-Hill EducationIntroductory Mathematics for Engineering Applicat...Advanced MathISBN:9781118141809Author:Nathan KlingbeilPublisher:WILEY
- Mathematics For Machine TechnologyAdvanced MathISBN:9781337798310Author:Peterson, John.Publisher:Cengage Learning,