Short Answer
A random sample of 45 door-to-door encyclopedia salespersons were asked how long on average they were able to talk to the potential customer. Their answers revealed a mean of 8.5 minutes with a variance of 9 minutes.
Give a point estimate in minutes for the average conversation length.
______________
Give the margin of error.
______________
Correct Answer:
Verified
Correct Answer:
Verified
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