Mathematics, 25.01.2020 06:31 u8p4
Astudy conducted by researchers from the department of education wanted to know the average debt of college students in the united states. in order to obtain a sample representative of all students, the researchers divided college students into the four classes (freshman, sophomore, junior, and senior) and then took a random sample of students from each class. which sampling method did they use?
a) stratified random sampling
b) systematic random sampling
c) cluster sampling
d) simple random sampling
Answers: 3
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Acircle has a diameter will endpoints of (-2,8) and (6, 4). what is the center of the circle
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(x-5)1/2+5=2 what is possible solution of this equation
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Mathematics, 22.06.2019 03:30
Adan has decided to purchase an $9000 car. he plans on putting 20% down toward the purchase and financing the rest at 7.9% interest rate for 3 years. find his monthly payment a) $225.29 b) $298.81 c) $204.78 d) $236.89
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Mathematics, 22.06.2019 04:10
If jobs arrive every 15 seconds on average, what is the probability of waiting more than 30 seconds?
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