Suppose that X2 points is normally distributed with n = 200 and p = 0.4. Approximate the probability that X is at most 70 Approximate that the probability of X is at least 70

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A: We have given that.   X~N( μ , ?^2 )   μ=14.3    , ?=3.6   Z-score =( x - μ )/?

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A: We have given that.   X~N( μ , ?^2 )   μ=9.3     , ?=2.5   Z-score =( x - μ )/?

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A: Given: μ=148Sample size, n=250sample mean, x¯=148.3sample sd, s=8  

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A: Solution-: Given: n=25, p=0.7 We find P(the sample mean less than18.1)=? 

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A: Givensample size(n)=120p^=0.0499α=1%=0.01

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