Determine the mean, the variance, and the standard deviation of the following discrete distribution. P(x) 1 0.222 0.321 3 0.172 4 0.148 0.137 (Round the intermediate values and final answers to 3 decimal places, e.g. 2.153.) Mean, u = Variance, o2 = Standard deviation, ơ =

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A: Excel formula: =NORMINV(0.305,0,1)=-0.5100

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A: Here use basic of  normal distribution

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A: Given,n1=24n2=32x1=50.6s1=6.8x2 =55.6s2=3.2α=0.10H0:μ1=μ2H1:μ1<μ2

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A: xx26.947.617.251.849.284.6412.4153.768.673.9625.6655.366.542.25

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A: The provided information is  The mean and standard deviation is  µ=200 σ=40 P(X<120)=?…

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A: Given that.   X~N( μ , ?^2 )   μ=68     , ?=3.8   , n=43

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A: Given that, Mean = 225 Standard deviation = 10 Sample size = 100

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