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Studies find that in a random sample of 3000 adults aged 18 and over, 1410 owned an MP3 player. The 95% large-sample confidence interval for the proportion of all adults aged 18 and over who own an MP3 player is what?
Statistics and Probability, Statistics
The following data represents rain fall (x) and yield of paddy per hectare (y) in a particular area. X 113 102 95 120 140 130 125 Y 1.8 1.5 1.3 1.9 1.1 2.0 1.7 Fit the regression equation x and y. Estimate Y when x= 145. ...
For an environmental group, it is known that 75% of their door-to-door solicitations result in a donation of some kind. Find the probability that... (Hint: first determine what is a 'success' and what is a 'failure' base ...
A nutritional scientist wishes to study the effect of storage time on the amount of vitamin C (milligrams) contained in 50 gram freeze dried fruit packs when stored for one, one and a half and 2 years. Five fruit packs w ...
You work as a purchasing manger at walter Pharmaceuticals. Yor currnet suppliers of raw materials has an average delivery time of 14 days. Another vendor approaches you and says that they can match your current vendors's ...
41% of the doctors in America are dentists. If a random sample of size 826 is selected, what is the probability that the proportion of doctors who are dentists will be less than 40%?
Many high school students take the AP tests in different subject areas. In 2007, of the 144,796 students who took the biology exam 84,199 of them were female. In that same year, of the 211,693 students who took the calcu ...
A business analyst in the Washington, D.C. area looked at the following Christmas 2016 and 2017 toy sales in Metro D.C. Six toy stores were were contacted and shared the following information where x is 2016 sales and y ...
Billy currently has $500 in an account that earns 12% APR, compounded monthly. Assuming he doesn't withdraw any of the funds, how much will his balance be in 6 years?
According to a survey of 25,000 ?households, 55 % of the people watching a special event on TV enjoyed the commercials more than the event itself. Complete parts a through e below based on a random sample of nine people ...
Height in inches 69 67 69 71 70 72 Weight in lbs 164 161 189 192 184 198 a) Find the equation of the regression line with height as the explanatory variable and use the regression line to find the predicted ...
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Why might a bank avoid the use of interest rate swaps, even when the institution is exposed to significant interest rate
Describe the difference between zero coupon bonds and coupon bonds. Under what conditions will a coupon bond sell at a p
Compute the present value of an annuity of $ 880 per year for 16 years, given a discount rate of 6 percent per annum. As
Compute the present value of an $1,150 payment made in ten years when the discount rate is 12 percent. (Do not round int
Compute the present value of an annuity of $ 699 per year for 19 years, given a discount rate of 6 percent per annum. As