Multiple Choice
Certain transportation company has a fleet of 210 vehicles.The average age of the vehicles is 4.25 years, with a standard deviation of 18 months.In a random sample of 40 vehicles, what is the probability that the average age of vehicles in the sample will be less than 4 years?
A) 0.146
B) 0.163
C) 0.180
D) 0.197
E) 0.214
Correct Answer:
Verified
Correct Answer:
Verified
Q45: The sampling distribution of the sample means
Q46: According to the central limit theorem, for
Q47: If random variable X is distributed according
Q48: If a researcher selects every k<sup>th</sup> item
Q49: Catherine Chao, Director of Marketing Research, needs
Q51: Suppose the population of all public Universities
Q52: Pinky Bauer, Chief Financial Officer of Harrison
Q53: According to the central limit theorem, if
Q54: Alice Zhong is the VP of Operations
Q55: A nonrandom sampling technique that is similar