SAT, 28.07.2020 19:01, Llamacornbabe
The percentage of families with a monthly income of 1,000 or more in city a and city b is 25% and 20% respectively. If a random sample of 100 families is selected from each of these two cities and the proportion of families earning rs. 1,000 or more in the two samples are compared, what is the probability that the city a sample proportion will be greater than that of city b's by 3% or more?
Answers: 2
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The percentage of families with a monthly income of 1,000 or more in city a and city b is 25% and 20...
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