How large the sample is required to be confident
The pollster wants to evaluate proportion of United States voters who favor capital punishment. How large the sample is required to be 90% confident that sample proportion will not vary from true proportion by more than 4%.
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Determine value of x (rounded to nearest item) which maximizes revenue and determine max revenue (rounded to nearest dollar).
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Execute the indicated operation and state the result in form a + bi. (1 + 2 sqrt -3 )(2 - 3 sqrt -3). Discover all real numbers x and y which satisfy equation: -2x - 4 + 2yi = 3x - 2i.
The ship leaves port at noon and has bearing of S 33° W. Ship sails at 20 knots. Determine how many nautical miles south and how many nautical miles west will ship have traveled by 6:00 P.M.?
How large the sample is required to be 90% confident that sample proportion will not vary from true proportion by more than 4%.
Amount of area covered by blackberry bushes in the park has been increasing by 12% each year. It is evaluated that area covered in 2009 was 4,500 square feet. Find area that will be covered in 2020.
Radioactive substance decays exponentially. Scientist starts with 100 milligrams of the radioactive substance. After 35 hours, 50 mg of substance remains. How many milligrams will stay after 54 hours?
The car was worth at $38,000 in year 2003. Value depreciated to $11,000 by year 2009. suppose that car value continues to decrease by same percentage. Determine the value be in the year 2013?
If $4,000 is invested in the bank account at the interest rate of 7 per cent per year, determine amount in bank after nine years if interest is compounded annually, quarterly, monthly, and continuously.
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