In a telephone enquiry system, the number of phone calls regarding relevant enquiry follow poisson distribution with an average of five phone calls during 10-minute time intervals. The probability that there is at the most one phone call during a 10-minute time period is

At a telephone enquiry system the number of phone calls regarding relevant enquiry follow Poisson distribution with an average of 5 phone calls during 10 minute time intervals. The probability that there is at the most one phone calls during a 10 minute time period is

At a telephone enquiry system the number of phone calls regarding relevant enquiry follow Poisson distribution with an average of 5 phone cells during 10 - minute time intervals . The probability that there is at the most one phone call during a 10 - minute time period is :

If the number of telephone calls an operator receives between 10:00 am to 10:10 pm follow poisson distribution with mean 3. The probability that the operator receives one call during that interval the next day is

If the number of telephone calls an operator receives between 10.00 pm to 10.10 pm follow poisson distribution with mean 3. The probability that the operator receives one call during that interval the next day is

In a telephone exchange , the frequency distribution of the number of telephone calls per minute for any hour are given below : find the average number of telephone calls.

The number of individuals of the population who left the habitat and gone elsewhere during the time period is called :

Suppose that the number of telephone calls coming into a telephone exchange between 10 A.M. and 11 A.M., say, X_(1) is a random variable with possion distribution with parameter 2. Similarly the number of calls arriving between 11 A.M. and 12 noon, say X_(2) also follows a poisson distribution with parameter 6. If X_(1) and X_(2) are independent, what is the probability that more than 5 calls come in between 10 A.M. and 12 noon.

The number of telephone calls received in 245 successive one minute intervals at an exchange is given below in the folowing frequecny distribution What is the mean of the distribution?

The number of telephone calls received in 245 successive one minute intervals at an exchange is given below in the folowing frequecny distribution What is the mode of the distribution?