Point 2. An authorized virtual store of a well-known cellphone brand is interested in understanding and improving the customer service experience through its digital channels. For the store owners, the live chat communication channel is fundamental, for which they have assigned a small team to exclusively attend this channel. One of the key performance indicators of efficient communication and good customer service is the response time to the first message, that is, the time that elapses from when a user starts a chat conversation until any service agent responds to the customer. Class Exercises The goal for the service agents is that this time be less than a minute, but for various reasons, a customer does not always receive a prompt response. If this time exceeds five minutes, an automatic message is sent asking the customer to try communicating later. One of the store's data analysts has found that the time for the first response, in minutes, can be represented as a random variable X with the following probability density function: 0 < x <1 fx(x)= 12 0 otherwise a. Graph the Probability Density Function fx(x) of the random variable X. b. Find and graph the Cumulative Distribution Function Fx(x) of the random variable X. c. Using the Cumulative Distribution Function Fx (x), found in the previous part, calculate the probability that the response time to a chat request selected at random is between 0.8 minutes and 1.6 minutes.

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Chapter1: Combinatorial Analysis
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Point 2.
An authorized virtual store of a well-known cellphone brand is interested in
understanding and improving the customer service experience through its digital
channels. For the store owners, the live chat communication channel is
fundamental, for which they have assigned a small team to exclusively attend this
channel.
One of the key performance indicators of efficient communication and good
customer service is the response time to the first message, that is, the time that
elapses from when a user starts a chat conversation until any service agent
responds to the customer.
Class Exercises
The goal for the service agents is that this time be less than a minute, but for
various reasons, a customer does not always receive a prompt response. If this
time exceeds five minutes, an automatic message is sent asking the customer to
try communicating later.
One of the store's data analysts has found that the time for the first response, in
minutes, can be represented as a random variable X with the following probability
density function:
0 < x <1
fx(x)=
12
0
otherwise
a. Graph the Probability Density Function fx(x) of the random variable X.
b. Find and graph the Cumulative Distribution Function Fx(x) of the random
variable X.
c. Using the Cumulative Distribution Function Fx (x), found in the previous part,
calculate the probability that the response time to a chat request selected at
random is between 0.8 minutes and 1.6 minutes.
Transcribed Image Text:Point 2. An authorized virtual store of a well-known cellphone brand is interested in understanding and improving the customer service experience through its digital channels. For the store owners, the live chat communication channel is fundamental, for which they have assigned a small team to exclusively attend this channel. One of the key performance indicators of efficient communication and good customer service is the response time to the first message, that is, the time that elapses from when a user starts a chat conversation until any service agent responds to the customer. Class Exercises The goal for the service agents is that this time be less than a minute, but for various reasons, a customer does not always receive a prompt response. If this time exceeds five minutes, an automatic message is sent asking the customer to try communicating later. One of the store's data analysts has found that the time for the first response, in minutes, can be represented as a random variable X with the following probability density function: 0 < x <1 fx(x)= 12 0 otherwise a. Graph the Probability Density Function fx(x) of the random variable X. b. Find and graph the Cumulative Distribution Function Fx(x) of the random variable X. c. Using the Cumulative Distribution Function Fx (x), found in the previous part, calculate the probability that the response time to a chat request selected at random is between 0.8 minutes and 1.6 minutes.
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