Mathematics, 02.12.2019 21:31 nacho5317
Arandom sample of size n1=22, taken from a normal population with a standard deviation σ1=5, has a mean x1=73. a second random sample of size n2=31, taken from a different normal population with a standard deviation σ2=3, has a mean x2=38. find a 96% confidence interval for μ1−μ2.
Answers: 3
Mathematics, 21.06.2019 14:30
Rai compares two cable plans from different companies. which equation gives the correct value of mm, the number of months for which plans a and b cost the same?
Answers: 2
Mathematics, 21.06.2019 17:20
The function a represents the cost of manufacturing product a, in hundreds of dollars, and the function b represents the cost of manufacturing product b, in hundreds of dollars. a(t) = 5t + 2 b(t) = 7t - 2t +4 find the expression that describes the total cost of manufacturing both products, a(t) + b(t). a. 7t^2 - 7t + 2 b. 7t^2 + 3 +6 c. 7t^2 + 7t - 6 d. 7t^2 - 3t + 6
Answers: 3
Mathematics, 21.06.2019 17:30
Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil
Answers: 1
Mathematics, 21.06.2019 20:10
Ascientist has discovered an organism that produces five offspring exactly one hour after its own birth, and then goes on to live for one week without producing any additional offspring. each replicated organism also replicates at the same rate. at hour one, there is one organism. at hour two, there are five more organisms. how many total organisms are there at hour seven? 2,801 19,531 19,607 97.655
Answers: 1
Arandom sample of size n1=22, taken from a normal population with a standard deviation σ1=5, has a m...
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