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The information center gives services in bilingual languages; requests for service arrive by telephone. Main language service requests and minor language service requests arrive according to independent Poisson processes with respective rate λ1 and λ2 requests per hour. The service time for each request is exponentially distributed with a mean of 1/μ1 minutes for major language request and a mean of 1/μ2 minutes for minor language request.
1. what is the probability that in the next hour a total of n service requests will arrive?2. what is the probability density of service time of an arbitrarily chosen service request?
If the packets are sold in multi-packs containing six packets, what is the distribution of the number of prizes in a randomly chosen multi-pack?
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Briefly describe correlational research. Name a variable from the workplace that might prove to provide a correlational relationship and explain why you would choose these two?
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Visa Card USA studied how frequently young consumers, ages 18 to 24, use plastic cards in making purchases. The results of the study provided the following probabilities.
A manufacturer wants to increase the shelf life of a line of cake mixes. past records indicate that the average shelf life of the mix is 216 days. after a revised mix has been developed, a sample of nine boxes of cake mix gave these shelf lives (i..
Employees of a local university have been classified according to gender and job type. The following table provides data about the employees.
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