We need at least 10 more requests to produce the answer.
0 / 10 have requested this problem solution
The more requests, the faster the answer.
3.1.101 The function P(y)=0.022y - 4.173y +258.340 represents the population P (in millions) of people in...
Assume that in one country in 2005, 12.4 % of the population was 65 or older. By 2050, this percent is expected to be 20.815%. The percent of the population ages 25-34 in 2005 was 13.9%. That age group is expected to include 13.1035% of the population in 2050. a. Assuming these population changes are linear, use the data for the 65 or over age group to write a linear equation. Then do the same for the 25-34 age group....
The table shows data from 1975 and projections to 2050 of the number of millions of people age 15 to 59 in a large country. Complete parts (a) and (b) below. EEClick the icon to view the data table. a function of the number What is the quadratic function that best models this population years after 1970? Let x represent the number of years after 1970 and y represent the number of millians of people in this labor pool. y...
L(x)=x^p
p=1.3,1.8,2,3,4
by y = L(x), where 0sxs1 represents the lowest fraction of the population of a society in terms of weath and OSystrepresents te faction of the total wealth that is owned by that fraction of the society. Use this information to complete parts a through g Click the lcon to view an example of a Lorenz curve. is accompanied by the line y=x called the line of perfect og ality. Explain why this line is given this name....
In the year 2000, the population of a certain country was 278 million with an estimated growth rate of 0.5% per year. Based on these figures, find the doubling time and project the population in 2100. Let y(t) be the population of the country, in millions, t years after the year 2000. Give the exponential growth function for this country's population. y(t) = 1 (Use integers or decimals for any numbers in the expression. Round to four decimal places as...
The demand for a product can be approximated by q=D(p)=80e−0.01p, where p represents the price of the product, in dollars, and q is the quantity demanded. (a) Find the elasticity function: E(p)= (b) Evaluate the elasticity at 5. E(5)= (c) Should the unit price be raised slightly from 5 in order to increase revenue? ? yes no (d) Use the elasticity of demand to find the price pp which maximizes revenue for this product. p=p= Round to three decimal places as needed.
Consider the following set of dependent and independent variables. Complete parts a through c below. y 10 11 14 14 20 24 26 32 저15597121521 x2 17 11 13 11 2 8 6 4 a. Using technology, construct a regression model using both independent variables. y = 1 3.5734 ) + ( 0.9496 ) x 1 + (-0.4001 ) x2 (Round to four decimal places as needed.) b. Test the significance of each independent variable using a 0.10. Test the...
The population of Mexico between 1921 and 2010 can be modeled as p(t) = 8.028e0.025t million people where t is the number of years since 1900.† (a) What was the population of Mexico in 2006? (Round your answer to three decimal places.) How rapidly was the population of Mexico growing in 2006? (Round your answer to three decimal places. (b) Write a linearization of p in 2006. (Round all numerical values to three decimal places.) pL(t) = (c) Use the...
The estimated distribution (in millions) of the population by age in a certain country for the year 2015 is shown in the pie chart. Make a frequency distribution for the data. Then use the table to estimate the sample mean and the sample standard deviation of the data set. Use 70 as the midpoint for "65 years and over." Under 4 years: 21.5 5-14 years: 39.9 15-19 years: 20.3 20-24 years: 22.3 25-34 years: 48.4 35-44 years: 37.8 45-64 years:...
In the year 2000, the population of a certain country was 276 million with an estimated growth rate of 0.5% per year a. Based on these figures, find the doubling time and project the population in 2120 b Suppose the actual growth rates are ust 0.2 percentage points lower and higher than 0.5% per year 0.3% and 0.7%). What are the resulting doubling times and projected 2120 population? a. Let y(t) be the population of the country, in millions, t...
(4 points) A population, P(t) (in millions) in year t, increases exponentially. Suppose P(7) = 20 and P(15) = 27. a) Find a formula for the population in the form P(t) = ab. Enter the values you found for a and b in your formula in the blanks below. Round your values to 4 decimal places. a = b= b_ b) If P(t) = aekt , what is the value of k in your formula. k = (round to 4...