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ccording to our records you have not yet redeemed an access code for this class or purchased access online. The grace per onday, January 22 2018 at 1200 AM PST. Afer that date you will no longer be able to see your WebAssign assignments or grades G My Notes Ask Yo reports the number of major defects in each car examin 1-4 ports 04 Submissions Used A consumer organization that evaluates new automobiles customarily x denote the number of major defects in a randomly selected car of a certain type. The cdf of X is as follows: 0.02 0 0.18 1 x)0.30 2 0.69 3 0.90 4 0.97 5 Calaulate the following probabilities directly from the cof: (Round to two decimal places.) )F2), that is, Px s 2) 0.12 (b) PX> 3) 31 73 e)what is the pmf of (Round to two decimal places.) p(x) t) The mean, varlance and standard deviation for X are: (Round to two decimal places.) soo)- Show My Work

Explanation / Answer

requested parts given below:

e) pmf

f)

E(X) = mean = sum(x*px) = 2.94

V(x) = sum(x^2*px) - mean^2 = 10.34-2.94^2 = 1.6964

SD(X) = sqrt(V(X)) = sqrt(1.6964) = 1.302459

x 0 1 2 3 4 5 6 p(x) =0.02 =0.18-0.02 =0.3-0.18 =0.69-0.3 =0.9-0.69 =0.97-0.9 =1-0.97 p(x) 0.02 0.16 0.12 0.39 0.21 0.07 0.03

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