A company responds to 80% of all enquiries within 2 working days. The firm received 8 enquiries today. What is the probability that all the 8 enquiries are responded within 2 working days?

Select the correct answerA can do 75% of a job in 9 days and B can do half of the job in 8 days. If they work on it together, then in how many days can they do half the job?Options40/7 days7/2 days9/2 days24/7 days

Calls arrive at a call center at the rate of 42 per hour.What is the probability that the next call arrives in a.less than 2 minutes? b.more than 4 minutes? c.less than 1 minute? Round to four decimal places as​ needed.

The number of times a hotline receives calls per minute obeys a Poisson distribution with a parameter of 4. Find the probability that exactly 8 calls are received in a certain minute.(The result is accurate to 4 decimal places)

In a library, there will be 7 people asking questions to the librarian every hour. What is the probability that, during a 10-minute period, the librarian will have exactly one query (round your answer to four decimal places)?

6.3 The daily amount of coffee, in liters, dispensed by a machine located in an airport lobby is a random variable X having a continuous uniform distribution with A = 7 and B = 10. Find the probability that on a given day the amount of coffee dispensed by this machine will be (a) at most 8.8 liters;