Independent random samples of n=18n=18 observations each are drawn from normal populations. The parameters of these populations are: Population 1:   μ=280μ=280 and σ=25σ=25 Population 2:   μ=269μ=269 and σ=29σ=29 Find the probability that the mean of sample 1 is greater than the mean of sample 2 by more than 19. Probability =

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 Independent random samples of n=18n=18 observations each are drawn from normal populations. The parameters of these populations are:

Population 1:   μ=280μ=280 and σ=25σ=25
Population 2:   μ=269μ=269 and σ=29σ=29



Find the probability that the mean of sample 1 is greater than the mean of sample 2 by more than 19.
Probability = 

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