Question

In: Statistics and Probability

A toll-free phone number is available from 9 a.m. to 9 p.m. to customers who want...

A toll-free phone number is available from 9 a.m. to 9 p.m. to customers who want to register a complaint about a product purchased from your company. Past history indicates that, on average, 0.4 calls are received per hour.

(a) Decide what would be an appropriate distribution to describe the process [2] of people making complaints. Give a justification of your answer, in at most one sentence.

(b) Using the distribution in (a), find the following probabilities: (i) the probability that zero phone calls will be received; [4] (ii) the probability that one phone call will be received; [4] (iii) the probability that two or more phone calls will be received. [2]

Solutions

Expert Solution


Related Solutions

A toll-free phone number is available from 9 a.m. to 9 p.m. for your customers to...
A toll-free phone number is available from 9 a.m. to 9 p.m. for your customers to register complaints about a product purchased from your company. Past history indicates that an average of 1.0 calls are received per minute. Complete parts (a)through (c). A.    what is the probability that during a 1 min period zero phone calls will be received? B.    what is the probability that during a 1 min period three or more phone calls will be received? C.    what is the maximum...
A toll-free phone number is available from 9 AM to 9 PM for your customers to...
A toll-free phone number is available from 9 AM to 9 PM for your customers to register complaints about a product purchased from your company. Past history indicates that an average of 2.8 calls is received per minute. What is the area of opportunity?
Club Fitness is open from 5 A.M. until 9 P.M. Monday through Saturday. The gym is...
Club Fitness is open from 5 A.M. until 9 P.M. Monday through Saturday. The gym is closed on Sundays and holidays. Hank Hunkley, the owner, is considering offering 24-hour, 7-day-a-week, 365-days-a year access for an additional $59 a year per member. In exchange for the extra fee, the member would receive a magnetic fob that will unlock the door when the facility is closed. Each fob would cost Hank $5. Based on a survey taken of his 951 current members,...
Q31. A customer comment phone line is staffed from 8:00 a.m. to 4:30 p.m. five days...
Q31. A customer comment phone line is staffed from 8:00 a.m. to 4:30 p.m. five days a week. Records are available that show the number of calls received every day for the last five weeks. Excel Data can be found in Data Tab/Sheet a. Show a time series data plot of data and describe your observation in terms of pattern, trend, etc. b. Use a dummy variable method forecasting method to produce Week 6’s Daily and total calls for Week...
C&A makes two types of products using four machines from 9 a.m. to 5 p.m. each...
C&A makes two types of products using four machines from 9 a.m. to 5 p.m. each day. Product A visits machines 1, 2, and 4. Product B only visits machines 1 and 3. The capacity is 0.4 unit per minute at machine 1, 0.12 unit per minute at machine 2, 0.2 unit per minute at machine 3, and 0.3 unit per minute at machine 4. The demand per day is 40 units for Product A and 160 units for Product...
The Bank of Seattle is open Monday through Friday from 10 a.m. to 5 p.m. From...
The Bank of Seattle is open Monday through Friday from 10 a.m. to 5 p.m. From past experience, the bank knows that it needs the number of tellers shown in the table below at various times of the day. The Bank of Seattle hires two types of tellers. Full-time tellers work 10 a.m. to 5 p.m., 5 days a week, with 1 hour off each day for lunch. The bank determines when a full-time employee takes his or her lunch...
An IV of 1,000 mL is to infuse from 6 a.m. until 2 p.m. The drop...
An IV of 1,000 mL is to infuse from 6 a.m. until 2 p.m. The drop factor is 15 gtt/mL. Calculate the flow rate.__________    At 11 a.m. you notice that 750 mL has infused. Recalculate the flow rate for the remaining solution. _____________ Does it fall within the safe range for recalculating an IV flow rate? ________
An IV of 1,000 mL is to infuse from 6 a.m. until 2 p.m. The drop...
An IV of 1,000 mL is to infuse from 6 a.m. until 2 p.m. The drop factor is 15 gtt/mL. Calculate the flow rate
Wally’s Widget Warehouse takes orders from 7 a.m. to 7 p.m. The manager wants to analyze...
Wally’s Widget Warehouse takes orders from 7 a.m. to 7 p.m. The manager wants to analyze the process and has provided the following process flow diagram. There are three steps required to ship a customer order. The first step is to take the order from a customer. The second step is to pick the order for the customer, and then they have to pack the order to ready it for shipping. Wally promises that every order placed today gets shipped...
The data to the right represent the number of customers waiting for a table at?6:00 P.M....
The data to the right represent the number of customers waiting for a table at?6:00 P.M. for 40 consecutive Saturdays at? Bobak's Restaurant. Complete parts?(a) through? (h) below. 5 9 3 4 9 5 4 3 11 10 4 6 2 5 3 7 7 11 6 2 6 4 5 8 13 10 8 2 7 5 5 10 6 10 4 6 3 5 8 4 Number of Customers Frequency 1–3 7 4–6 18 7-9 8 10–12 6...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT