Question: Need help with 9 + 10 ! 9. [-/1 Points] DETAILS TANFIN12 7.6.034. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A survey involving 500 likely

Need help with 9 + 10 !

Need help with 9 + 10 ! 9. [-/1 Points] DETAILS
9. [-/1 Points] DETAILS TANFIN12 7.6.034. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A survey involving 500 likely Democratic voters and 400 likely Republican voters asked the question: Do you support or oppose legislation that would require trigger locks on guns, to prevent misuse by children? The following results were obtained: Answer Democrats, % Republicans,% Support Oppose Don't know/refused If a randomly chosen respondent in the survey answered "support," what is the probability that he or she is a likely Republican voter? (Round your answer to three decimal places.) Need Help? Read It Watch It 10. [-/2 Points] DETAILS TANFIN12 7.6.038. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The estimated probability that a Brand A, a Brand B, and a Brand C plasma TV will last at least 30,000 hr is 0.95, 0.90, and 0.85, respectively. Of the 4500 plasma TVs that Ace TV sold in a certain year, 1000 were Brand A, 1500 were Brand B, and 2000 were Brand C. If a plasma TV set sold by Ace TV that year is selected at random and is still working after 30,000 hr of use, answer the following. (Round your answers to three decimal places.) (a) What is the probability that it was a Brand A TV? (b) What is the probability that it was not a Brand A TV? Need Help? Read It

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