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(See Solution) The average age for licensed drivers in the county is μ =40.3 years, with a standard deviation of σ =13.2 A researcher obtained a random

Question: The average age for licensed drivers in the county is $\mu =40.3$ years, with a standard deviation of $\sigma =13.2$

A researcher obtained a random sample of n = 16 parking tickets and computed an average age of $M =38.9$ years for the drivers. Compute the $z$ -score for the sample mean and find the probability of obtaining an average age this young or younger for a random sample of licensed drivers. Is it reasonable to conclude that this set of $n=16$ people is a. representative sample of licensed drivers?
The same researcher obtained a random sample of $n=36$ speeding tickets and computed an average age of $M=36.2$ years for the drivers Compute the $z$ -score for the sample mean and find the probability of obtaining an average age this young or younger for a random sample of licensed drivers. Is it reasonable to conclude that this set of $n=36$ people is a representative sample of licensed drivers?

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(See Solution) The average age for licensed drivers in the county is μ =40.3 years, with a standard deviation of σ =13.2 A researcher obtained a random

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