Mathematics, 01.08.2019 12:00 stephany739
An opinion poll in california uses random digit dialing to choose telephone numbers at random. numbers are selected separately within each california area code. the size of the sample in each area code is proportional to the population living there. (a) what is the name for this kind of sampling design?
Answers: 1
Mathematics, 21.06.2019 13:30
The decibel level of sound is 50 db greater on a busy street than in a quiet room where the intensity of sound is watt/m2. the level of sound in the quiet room is db, and the intensity of sound in the busy street is watt/m2. use the formula , where is the sound level in decibels, i is the intensity of sound, and is the smallest sound intensity that can be heard by the human ear (roughly equal to watts/m2).
Answers: 1
Mathematics, 21.06.2019 17:30
One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)
Answers: 1
Mathematics, 21.06.2019 20:40
Sh what is the value of x? ox= 2.25 x = 11.25 ox= x = 22 1 (2x + 10) seo - (6x + 1) -- nie
Answers: 3
An opinion poll in california uses random digit dialing to choose telephone numbers at random. numbe...
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