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he speed with which utility companies can resolve problems is very important. GTC, the Georgetown Telephone Company, rep...

he speed with which utility companies can resolve problems is very important. GTC, the Georgetown Telephone Company, reports it can resolve customer problems the same day they are reported in 75% of the cases. Suppose the 12 cases reported today are representative of all complaints. a-1. How many of problems would you expect to be resolved today? (Round your answer to 2 decimal places.) a-2. What is the standard deviation? (Round your answer to 4 decimal places.) What is the probability 9 of the problems can be resolved today? (Round your answer to 4 decimal places.) What is the probability 9 or 10 of the problems can be resolved today? (Round your answer to 4 decimal places.) What is the probability more than 7 of the problems can be resolved today? (Round your answer to 4 decimal places.)

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Answer #1

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Download link for excel: https://drive.google.com/open?id=1v9NwEJlBtbiKNJryIgJdvc3MZ7QCz5ye

F G A B CD E H J K L Change 1 (a-1) Number of problems х Р(Х-x) 0 0.0000 n12 3 9.00 p0.75 4 (a-2) Standard deviation 1 0.0000

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