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The speed with which utility companies can resolve problems is very important. The Georgetown Telephone Company...

The speed with which utility companies can resolve problems is very important. The Georgetown Telephone Company (GTC), reports that it can resolve customer problems the same day they are reported in 69% of the cases. Suppose that the 15 cases reported today are representative of all complaints.

a-1. How many of the problems would you expect to be resolved today? (Round the final answer to 2 decimal places.)

Number of Problems            

a-2. What is the standard deviation? (Round the final answer to 4 decimal places.)

Standard Deviation            

b. What is the probability that 10 of the problems can be resolved today? (Round the final answer to 4 decimal places.)

Probability             

c. What is the probability that 10 or 11 of the problems can be resolved today? (Round the final answer to 4 decimal places.)

Probability             

d. What is the probability that more than 10 of the problems can be resolved today? (Round the final answer to 4 decimal places.)

Probability             

Math   Statistics-And-Probability   
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