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
orchestra answered 2 years agoRelated 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...
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
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...
Skyline pizza is a famous restaurant operating a number of outlets. The restaurant uses a toll-free...
Skyline pizza is a famous restaurant operating a number of
outlets. The restaurant uses a toll-free telephone number to book
pizzas at any of its outlets. If the clerk is occupied on one line,
incoming phone calls to the restaurant are answered automatically
by an answering machine and asked to wait. As soon as the clerk is
free, the party that has waited the longest is transferred and
answered first. Calls come in at a rate of about 15 per...
The Schmedley Discount Department Store has approximately 300 customers shopping in its store between 9 A.M....
The Schmedley Discount Department Store has approximately 300
customers shopping in its store between 9 A.M. and 5 P.M. on
Saturdays. In deciding how many cash registers to keep open each
Saturday, Schmedley’s manager considers two factors: customer
waiting time (and the associated waiting cost) and the service
costs of employing additional checkout clerks. Checkout clerks are
paid an average of $8 per hour. When only one is on duty, the
waiting time per customer is about 10 minutes (or...
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