I need the answers to the following questions it seems as if im doing something wrong and I do not know what:
A researcher wishes to estimate, with 90% confidence, the percentage of adults support abolishing the penny. His estimate must be accurate within 2% of the true proportion.
A.Find the minimum sample size needed, using a prior study that found that 25% of the respondents said they support abolishing the penny.
B.No preliminary estimate is available. Find the minimum sample size needed.
A researcher wishes to estimate, with 99% confidence, the proportion of adults who have high speed internet access. Her estimate must be accurate within 5% of the true proportion.
A.Find the minimum sample size needed using a prior study that found that 32% of the respondents said they have high speed internet access.
B. No preliminary estimate is available. Find the minimum sample size needed.2 AnswersMathematics9 years ago
I came home sunday and there was an envelope with my name on it it was a scholarship for me to attend the university that I am currently going to I have a thank-you card and want to put a bit of thankfulness of my own word what would be something good to put into the card as a thank you from me.4 AnswersReligion & Spirituality1 decade ago
I am looking at opening a ebay store selling restaurant equipment I want to know is this a good decision and I am not looking to get rich but to just profit and do what I have to do? any comments and suggestions are gladly welcomed.2 AnswersSmall Business1 decade ago
Suppose that the output Q (in units) of a certain company is Q = 75K1/3L2/3,where K is the capital expenditures in thousands of dollars and L is the number of labor hours. Find ∂Q/∂K and ∂Q/∂L when capital expenditures are $729,000 and the labor hours total 9261. (Round your answers to the nearest whole number.)
∂Q/∂K = thousand units
∂Q/∂L = thousand units
The percent concentration y of a certain drug in the bloodstream at any time t (in hours) is given by the following.
y = 100(1 − e^−0.454t)
(a) What function gives the instantaneous rate of change of the concentration of the drug in the bloodstream?
(b) Find the rate of change of the concentration after 1 hour. Give your answer to three decimal places.
A large corporation with monopolistic control in the marketplace has its average daily costs, in dollars, given by the following.
C = 700/x + 100x + x^2
The daily demand for x units of its product is given by p = 60,000 − 50x dollars. Find the quantity that gives maximum profit, and find the maximum profit. What selling price should the corporation set for its product?
If the total cost function for a product is C(x) = 7(x + 3)^3 dollars, where x represents the number of hundreds of units produced, producing how many units will minimize average cost?
x = hundred units
Find the minimum average cost. (Round your answer to two decimal places put in dollars per hundred units)3 AnswersMathematics1 decade ago
A firm has monthly average costs, in dollars, given by the following function where x is the number of units produced per month.
C = 36,000/x + 100 + x
The firm can sell its product in a competitive market for $1700 per unit. If production is limited to 550 units per month, find the number of units that gives maximum profit, and find the maximum profit.
A firm can produce 500 units per week. If its total cost function is C = 300 + 1300x dollars and its total revenue function is R = 1800x − x^2 dollars, how many units, x, should it produce to maximize its profit? x= how many units and also find the maximum profit.
A company handles an apartment building with 64 units. Experience has shown that if the rent for each of the units is $520 per month, all the units will be filled, but 1 unit will become vacant for each $10 increase in the monthly rate. What rent should be charged to maximize the total revenue from the building if the upper limit on the rent is $680 per month?