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Mathematics, 04.11.2019 23:31 Ashley606hernandez
Aparticular telephone number is used to receive both voice calls and fax messages. suppose that 25% of the incoming calls involve fax messages, and consider a sample of 25 incoming calls. (a) what is the expected number of calls among the 25 that involve a fax message? (b) what is the standard deviation of the number among the 25 calls that involve a fax message? (round your answer to three decimal places.) (c) what is the probability that the number of calls among the 25 that involve a fax transmission exceeds the expected number by more than 2 standard deviations? (round your answer to three decimal places.)
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Aparticular telephone number is used to receive both voice calls and fax messages. suppose that 25%...
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