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Q:

continuous distributions s2

The number of arrivals per minute at a drive-in fast food outlet is modelled by a Poisson distribution with mean λ. During a Saturday evening, λ = 0.78.

(i) Give reasons why the proposed Poisson distribution might be a suitable model.

(ii) Calculate the probability of exactly two arrivals during a one-minute interval.

(iii) Calculate the probability of at least four arrivals during a five-minute interval.

(iv) Using a suitable approximating distribution, calculate the probability that there are more than 40 arrivals between 7 pm and 8 pm.
In Topics: Helping my child with math
> 60 days ago

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