Question

A customer spending waiting time at a place check-in counter is a random variable with mean 8.2 minutes and standard deviation 1.5 minutes. Suppose that a random sample of n = 49 customers is observed. Find the probability that the average time waiting in line for these customers is:

(a) Less than 9.3 minutes

(b) Between 5 and 10 minutes

(c) Less than 7.5 minutes

Answer #1

The amount of time that a customer spends waiting at an airport
check-in counter is a random variable with mean 8.1 minutes and
standard deviation 1.6 minutes. Suppose that a random sample of
n=50 customers is observed. Find the probability that the average
time waiting in line for these customers is
(a) Less than 10 minutes
(b) Between 5 and 10 minutes
(c) Less than 6 minutes
Round your answers to four decimal places (e.g. 0.9876).

The waiting time at a certain checkout counter follows an
exponential distribution with a mean waiting time of five
minutes.
a) Compute the probability that an individual customer waits
longer than 5 1/2 minutes at the checkout counter.
b) Compute the exact probability that the average checkout time
for 5 individuals is greater than 5 ½ minutes.
c) Compute the exact probability that the average checkout time
for 15 individuals is greater than 5 ½ minutes.
d) Apply the Central...

Suppose the waiting time at a certain checkout counter is
bimodal. With probability 0.95, the waiting time follows an
exponential distribution with a mean waiting time of five minutes.
With probability 0.05, the waiting time equals 30 minutes.
a) Compute the mean waiting time at the checkout counter.
b) Compute the variance of the waiting time at the checkout
counter.
c) Compute the probability that an individual customer waits
longer than 5 1/2 minutes at the checkout counter.
d) Using...

Suppose the waiting time at a certain checkout counter
is bimodal. With probability 0.95, the waiting time follows an
exponential distribution with a mean waiting time of five minutes.
With probability 0.05, the waiting time equals 30
minutes.
a) Compute the mean waiting time at the checkout
counter.
b) Compute the variance of the waiting time at the
checkout counter.
c) Compute the probability that an individual customer
waits longer than 5 1/2 minutes at the checkout counter.
d) Using...

Suppose the waiting time at a certain checkout counter is
bimodal. With probability 0.95, the waiting time follows an
exponential distribution with a mean waiting time of five minutes.
With probability 0.05, the waiting time equals 30 minutes. a)
Compute the mean waiting time at the checkout counter. b) Compute
the variance of the waiting time at the checkout counter. c)
Compute the probability that an individual customer waits longer
than 5 1/2 minutes at the checkout counter. d) Using...

To manage their rental counter, Too Late can add a computerized
check-in option. Upon arrival, customers will first go to the
check-in machine, enter their reference number, (electronically)
sign a waiver, and make a payment. After this step is complete, the
customer will go to the attendant on duty to receive the vehicle’s
keys and directions to its parking location.
If a customer arrives at the check-in station and finds that it
is being used by another customer, the incoming...

time spent waiting at a coffee shop xan be modeled as a random
variable if the average time spent waiting at the coffee shop is 4
hours, find the probability that a customer leaves the coffee shop
in less than 2 hours

Suppose that the average waiting time at a banking service is 10
minutes. A customer waited for 10 minutes, find the probability
that he will be still waiting after 30 minutes. What is the
approximate probability that the average waiting time of the next
25 customers is at most 12 minutes?

Suppose that the average waiting time at a banking service is 10
minutes.
A customer waited for 10 minutes, find the probability that he
will be still waiting after 30 minutes.
What is the approximate probability that the average waiting
time of the next 25 customers is at most 12 minutes?

A bank claims that the mean waiting time in line is less than
1.7 minutes. A random sample of 20 customers has a mean of 1.5
minutes with a standard deviation of 0.8 minute. If α = 0.05, test
the bank's claim using p-values.

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 5 minutes ago

asked 6 minutes ago

asked 12 minutes ago

asked 19 minutes ago

asked 22 minutes ago

asked 22 minutes ago

asked 25 minutes ago

asked 26 minutes ago

asked 28 minutes ago

asked 28 minutes ago

asked 31 minutes ago

asked 33 minutes ago