The number of computers sold per day at a local computer store, along with its corresponding probabilities, is shown in the table. Find the variance and standard deviation of the distribution. Number of Computers Sold (X) 2 3 4 Probability P(X=x) 0.10 0.20 0.30 0.20 0.20

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A: We have given that  Success of probability p =33%=0.33 Number of trials n=10 X~binomial ( n ,p)  

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A: Here use central limit theorem 

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A: We have given that.   X~N( μ , ?^2 )   μ=0     , ?=1  for standard normal    Z-score =( x - μ )/?  

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A:          

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Q: P(X) X*P(X) X-u (X-u)^2 [X-))^2]*P(X) 0.48 3 0.36 4 0.11 0.05 LO

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A:   HERE DEFINE EVENTS actually  have disease (using standard method ) = D test result positive  = T

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Q: need help asap :(

A: Given

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Q: 1.) Find the corresponding area between z=0 and draw the graph. z= 0.96 Please show your complete so...

A: We have to find given area by using z score table..

Q: cf

A: CDF: This is the cumulative distribution function.