Question: Answer A) 0.2222 B) 0.8 Please answer step by step. Hand calculations I need. Dont use R code please. Q4) Suppose the proportion of error

Answer A) 0.2222 B) 0.8 Please answer step by step. Hand

Answer A) 0.2222 B) 0.8

Please answer step by step. Hand calculations I need. Dont use R code please.

Q4) Suppose the proportion of error in code developed by a programmer, which varies from software to software, may be looked upon as a random variable having the beta distribution with =2 and =7. (a) Find the mean of this beta distribution, namely, the average proportion of errors in a code from this engineer. (b) Find the probability that a software developed by this engineer will contain 30% or more errors. Ans: (a) =0.2222; (b) 0,8

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