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4.41 A traditional call center has a simple mission: Agents have to answer customer calls fast and end them as quickly as possible to move on to the next call. The quality of service rendered by the call center was evaluated by recording the number of times a customer called the center back within a week of his or her initial call to the center. y = number of recalls 1 2 3 4 5 6 P(y) .151 232 354 .161 .067 .021 .014 a. What is the probability that a customer will recall the center more than three times? b. What is the probability that a customer will recall the center at least two times but less than five times? c. Suppose a call center must notify a supervisor if a customer recalls the center more than four times within a week of his or her initial call. What proportion of customers who contact the call center will require a supervisor to be contacted?

4.41 A traditional call center has a simple mission: Agents have to answer customer calls fast and end them as quickly as possible to move on to the next call. The quality of service rendered by the call center was evaluated by recording the number of times a customer called the center back within a week of his or her initial call to the center. y = number of recalls 1 2 3 4 5 6 P(y) .151 232 354 .161 .067 .021 .014 a. What is the probability that a customer will recall the center more than three times? b. What is the probability that a customer will recall the center at least two times but less than five times? c. Suppose a call center must notify a supervisor if a customer recalls the center more than four times within a week of his or her initial call. What proportion of customers who contact the call center will require a supervisor to be contacted?

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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question 4.41

2 R. Lyman Ott, Michael Longnecker - An Introduction to Statistical Methods and Data Analysis-Cengage (2016).pdf - Adobe Reader File Edit View Window Help 215 (228 of 1179) 125% Comment Share y 1 3 4 5 6 7 8 9 10 P(y) .100 .130 .250 .160 .095 .075 .063 .047 .041 .024 .015 arch term tents a. Construct a graph of P(y). b. Compute P(y= 2). c. Compute P(y>7). d. Compute P(2 < y< 7). lace EI Statistics & Scientific Method Bus. 4.41 A traditional call center has a simple mission: Agents have to answer customer calls fast and end them as quickly as possible to move on to the next call. The quality of service rendered by the call center was evaluated by recording the number of times a customer called the center ET Surveys & Experimental Studies to gather back within a week of his or her initial call to the center. Data + P Data Description ET Probability & y = number of recalls 1 2 3 4 6 P(y) .151 232 .354 .161 .067 .021 .014 Probability Distributions a. What is the probability that a customer will recall the center more than three times? b. What is the probability that a customer will recall the center at least two times but +P Inferences about Population Central less than five times? Values c. Suppose a call center must notify a supervisor if a customer recalls the center more than four times within a week of his or her initial call. What proportion of customers who contact the call center will require a supervisor to be contacted? EP Inferences Comparing 2 Population Central Values 4.8 Two Discrete Random Variables: The Binomial and the Poisson +P Inferences about 4.42 A biologist randomly selects 10 portions of water, each equal to .1 cm³ in volume, from the local reservoir and counts the number of bacteria present in each portion. The biologist then totals the number of bacteria for the 10 portions to obtain an estimate of the number of bacteria per cubic centimeter present in the reservoir water. Is this a binomial experiment? Population Variances Blo. + P Inferences about more than 2 Population Central Pol. Scl. 4.43 Examine the accompanying newspaper clipping. Does this sampling appear to satisfy the Values characteristics of a binomial experiment? ENG 12:07 AM P Type here to search 71°F IN 9/25/2021
Transcribed Image Text:2 R. Lyman Ott, Michael Longnecker - An Introduction to Statistical Methods and Data Analysis-Cengage (2016).pdf - Adobe Reader File Edit View Window Help 215 (228 of 1179) 125% Comment Share y 1 3 4 5 6 7 8 9 10 P(y) .100 .130 .250 .160 .095 .075 .063 .047 .041 .024 .015 arch term tents a. Construct a graph of P(y). b. Compute P(y= 2). c. Compute P(y>7). d. Compute P(2 < y< 7). lace EI Statistics & Scientific Method Bus. 4.41 A traditional call center has a simple mission: Agents have to answer customer calls fast and end them as quickly as possible to move on to the next call. The quality of service rendered by the call center was evaluated by recording the number of times a customer called the center ET Surveys & Experimental Studies to gather back within a week of his or her initial call to the center. Data + P Data Description ET Probability & y = number of recalls 1 2 3 4 6 P(y) .151 232 .354 .161 .067 .021 .014 Probability Distributions a. What is the probability that a customer will recall the center more than three times? b. What is the probability that a customer will recall the center at least two times but +P Inferences about Population Central less than five times? Values c. Suppose a call center must notify a supervisor if a customer recalls the center more than four times within a week of his or her initial call. What proportion of customers who contact the call center will require a supervisor to be contacted? EP Inferences Comparing 2 Population Central Values 4.8 Two Discrete Random Variables: The Binomial and the Poisson +P Inferences about 4.42 A biologist randomly selects 10 portions of water, each equal to .1 cm³ in volume, from the local reservoir and counts the number of bacteria present in each portion. The biologist then totals the number of bacteria for the 10 portions to obtain an estimate of the number of bacteria per cubic centimeter present in the reservoir water. Is this a binomial experiment? Population Variances Blo. + P Inferences about more than 2 Population Central Pol. Scl. 4.43 Examine the accompanying newspaper clipping. Does this sampling appear to satisfy the Values characteristics of a binomial experiment? ENG 12:07 AM P Type here to search 71°F IN 9/25/2021
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