The population of a city is growing every year at 8%. If the present population is 262236, find the population 2 years ago.
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Step-by-step explanation:
Parameters
Population mean = μ = ( Σ Xi ) / N
Population standard deviation = σ = sqrt [ Σ ( Xi - μ )2 / N ]
Population variance = σ2 = Σ ( Xi - μ )2 / N
Variance of population proportion = σP2 = PQ / n
Standardized score = Z = (X - μ) / σ
Population correlation coefficient = ρ = [ 1 / N ] * Σ { [ (Xi - μX) / σx ] * [ (Yi - μY) / σy ] }
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