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.
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Correct Answer:
Verified
Q158: Which of the following statements is correct?
A)
Q159: The margin of error equals the sum
Q160: A point estimate is defined as:
A) the
Q161: Those who engage in estimation insist on
Q162: Whenever a sampled population is normally distributed
Q164: A random sample of n = 1000
Q165: The margin of error is:
A) the difference
Q166: A random sample of n = 50
Q167: In order to estimate the average numbers
Q168: Independent samples of n1 = 400 and
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