Multiple Choice
In a simple random sample of 75 working adults in a city in Virginia, the average commute time for these workers was 23.65 minutes. The standard deviation from this sample was 18.50 minutes. A 95% confidence interval for the mean commute time for all adult workers in this city is approximately
A) 18.50 ± 2.73.
B) 18.50 ± 5.46.
C) 23.65 ± 4.187.
D) 23.65 ± 2.136.
Correct Answer:
Verified
Correct Answer:
Verified
Q32: A recent survey reported that 52% of
Q33: Another member of the city government is
Q34: An April 2016 opinion poll asked 1,190
Q35: In a simple random sample of 100
Q36: In a simple random sample of 100
Q38: You and a friend want to estimate
Q39: A recent Gallup Poll interviewed a random
Q40: A researcher chooses a simple random sample
Q41: The student newspaper at a college asks
Q42: The student newspaper at a college asks