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Question: Suppose the true average income for single head of household families in the US is $51,127 back in 2012. In 2014 a random sample of 130 families from throughout the country and the mean income was determined to be $53,869. Construct a 95% interval estimate for the true mean income of 2014 families if we know the true standard deviation in incomes is 12.5 thousand dollars. Is there evidence to say the incomes have increased from 2012 to 2014? Explain.
a scale drawing has a scale of 1/4 in.: 6 ft. Find the length on the drawing for each actual lenght. 18 ft, 66 ft, 204 ft.
Find your two rational expressions in the list below based on the first letter of your first name and explain in your own words what the meaning of domain is. Also, explain why a denominator cannot be zero.
Write the complex number in rectangular form. 7(cos120degrees + i sin120degrees) =
Calculate the required rate of return for Jupitor Inc.'s stock. The Jupitor's beta is 1.3 , the rate on a T-bill is 4 percent, the rate on a long-term T-bond is 4.7 percent, the expected return on the market is 8.5 percent
1. What are at least three reasons why managers should take the time to create effective plans? 2. How should managers measure whether their plans are successful? 3. Who should be involved in creating and executing management plans?
prove that the set of natural numbers will be a ring by using ring definition.zn is a ring for all n where n stands for
The number of parks, y, being built in a city over a period of time, x, is graphed on a rectangular coordinate system. Write a paragraph describing your interpretation when the slope is positive
Integrating a differential equation given the initial values and exponentiate both sides of the equation for to solve for P(t)
" After solving a system of linear equations, how can you check your answer to determine whether it is correct? Demonstrate the process of checking an answer with an example."
Most insurance companies will replace a vehicle any time an estimated repair exceeds? 80% of the? "blue-book" value of the vehicle.? Michelle's insurance company paid?$6300 for repairs on her car after an accident. What can be concluded about the?..
The instructions are as follows: write each equation in slope-intercept form and then find the slope and y-intercept.
Question 1- The following table shows the aggregate scores of three strategies in four scenarios. Which strategy is the most attractive
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