A company wants to reduce the time a customer is on the phone with their customer service department. They select 35 employees at random to take a training on customer service. They record the average time for that employee the month before the training and again a month after the training.This is the created a 90% confidence interval for the average difference in time.Before Training After Training Mean7.174285714Mean5.908571Standard Error0.088435787Standard Error0.117707Median7.2Median5.9Mode6.8Mode6.2Standard Deviation0.523193169Standard Deviation0.696365Sample Variance0.273731092Sample Variance0.484924Kurtosis-0.509862633Kurtosis-0.89125Skewness0.272172068Skewness0.209975Range2.2Range2.4Minimum6.2Minimum4.8Maximum8.4Maximum7.2Sum251.1Sum206.8Count35Count35Confidence Level(90.0%)0.149538217Confidence Level(90.0%)0.199034What evidence is there that shows that the training reduces the time spent talking to the custormers?

Name: A company wants to reduce the time a customer is on the phone with the
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Description: A company wants to reduce the time a customer is on the phone with their customer service department. They select 35 employees at random to take a training on customer service. They record the average time for that employee the month before the trai

Given Before Training After Training Mean 7.174285714 Mean 5.908571 Standard Error…

Answered: A company wants to reduce the time a…

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Author:Amos Gilat

Publisher:Amos Gilat

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A company wants to reduce the time a customer is on the phone with their customer service department. They select 35 employees at random to take a training on customer service. They record the average time for that employee the month before the training and again a month after the training.

This is the created a 90% confidence interval for the average difference in time.
Before Training		After Training

Mean	7.174285714	Mean	5.908571
Standard Error	0.088435787	Standard Error	0.117707
Median	7.2	Median	5.9
Mode	6.8	Mode	6.2
Standard Deviation	0.523193169	Standard Deviation	0.696365
Sample Variance	0.273731092	Sample Variance	0.484924
Kurtosis	-0.509862633	Kurtosis	-0.89125
Skewness	0.272172068	Skewness	0.209975
Range	2.2	Range	2.4
Minimum	6.2	Minimum	4.8
Maximum	8.4	Maximum	7.2
Sum	251.1	Sum	206.8
Count	35	Count	35
Confidence Level(90.0%)	0.149538217	Confidence Level(90.0%)	0.199034

What evidence is there that shows that the training reduces the time spent talking to the custormers?

Definition Definition Measure of central tendency that is the value that occurs most frequently in a data set. A data set may have more than one mode if multiple categories repeat an equal number of times. For example, in a data set with five item—3, 5, 5, 29, 473—the mode is 5 because it occurs twice and no other value occurs more than once. On a histogram or bar chart, the element with the highest bar represents the mode. Therefore, the mode is sometimes considered the most popular option. The mode is useful for nominal or categorical data (e.g., the most common color car that users purchase), but it is problematic for continuous data because it is more likely not to have any value that is more frequent than the other.

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