Mathematics, 02.11.2020 17:00 anniekwilbourne
The Residential Energy Consumption Survey found in 2001 that 47% of American household had internet access. A market survey organization repeated this study in a certain town with 25,000 households, using a simple random sample of 500 households: 239 of the same households had internet access. a) The percentage of households in the town with internet access is estimated at ; this is likely to be off by ___ or so. b) If possible, find a 95%-confidence interval for the percentage of all 25,000 households with internet access. If this is not possible, explain why or why not.
Answers: 2
Mathematics, 21.06.2019 15:30
Kevin is an insurance salesman. when he sells a policy, he makes 20 percent of the policy premium (p) up front; then each year the policy is active, he receives 15 percent of the original premium. which equation could be used to figure his total commission on a policy that has been active for five years? c=0.80p c=0.20p + 0.15p c=0.35p + 4(0.15) c=0.95p
Answers: 1
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Which expression shows the sum of the polynomials with like terms grouped together
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Isabel graphed the following system of equations. 2x – y = 6 y = -3x + 4 she came up with the solution (2,-2). what were the 3 steps she did to get that solution? (make sure they are in the correct order)
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Mathematics, 21.06.2019 21:00
Acomputer store buys a computer system at a cost of $370.80. the selling price was first at $ 618, but then the store advertised a 20 % markdown on the system. answer parts a and b. a. find the current sale price.
Answers: 1
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