A customer service representative was interested in comparing the average time (in minutes) customers are placed on hold when calling Southern California Edison (SCE) and Southern California Gas (SCG) companies. The representative obtained two independent random samples and calculated the following summary information: SCE SCG Sample Size 9 12 Sample Mean 3.2 minutes 2.8 minutes Sample Standard Deviation 0.5 minutes 0.7 minutes Test whether there is a significant difference in average time a customer is on hold between the two companies, at the level of significance 0.1. Group of answer choices Since 0.1 < p-value < 0.2, one cannot conclude that there is a significant difference in mean time a customer is on hold between the two companies. Since 0.05 < p-value < 0.1, one cannot conclude that there is a significant difference in mean time a customer is on hold between the two companies. Since 0.1 < p-value < 0.2, one can conclude that there is a significant difference in mean time a customer is on hold between the two companies. Since 0.05 < p-value < 0.1, one can conclude that there is a significant difference in mean time a customer is on hold between the two companies.
A customer service representative was interested in comparing the average time (in minutes) customers are placed on hold when calling Southern California Edison (SCE) and Southern California Gas (SCG) companies. The representative obtained two independent random samples and calculated the following summary information:
| SCE | SCG | |
| 9 | 12 | |
| Sample Mean | 3.2 minutes | 2.8 minutes |
| Sample Standard Deviation | 0.5 minutes | 0.7 minutes |
Test whether there is a significant difference in average time a customer is on hold between the two companies, at the level of significance 0.1.
Since 0.1 < p-value < 0.2, one cannot conclude that there is a significant difference in mean time a customer is on hold between the two companies.
Since 0.05 < p-value < 0.1, one cannot conclude that there is a significant difference in mean time a customer is on hold between the two companies.
Since 0.1 < p-value < 0.2, one can conclude that there is a significant difference in mean time a customer is on hold between the two companies.
Since 0.05 < p-value < 0.1, one can conclude that there is a significant difference in mean time a customer is on hold between the two companies.
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