Find probabilities that in one hour there are many calls

Reference no: EM13117064

The number of calls received by a switch board per hour follows a poisson distribution with parameter 25. Find the probabilities that in 1 hour (a) there are between 23 and 26 calls inclusive, (b) more than 30 calls, using the normal approximation to the poisson distribution.

Reference no: EM13117064

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