Posted by **kiera** on Friday, January 6, 2012 at 3:14pm.

the average age for licensed drivers in the country is u=40.3 years with a standard deviation of o= 13.2 years.

a. a researcher obtained a random sample of n=16 parking tickets and computed an average age of m=38.9 years for the drivers. is it reasonable to conclude that this set of n=16 people is a representative sample of licensed drivers?

b. 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?

## Answer This Question

## Related Questions

- statistics - The average age for licensed drivers in the county is μ 40.3...
- statistics - The average age for licensed drivers in a county is ยต= 42.6, σ...
- Statistics - An April 15, 2002 report in Time Magazine stated that the average ...
- Statistics - An April 15, 2002 report in Time Magazine stated that the average ...
- statistics - An April 15, 2002 report in Time Magazine stated that the average ...
- statistics - An April 15, 2002 report in Time Magazine stated that the average ...
- STATISTICS - An April 15, 2002 report in Time Magazine stated that the average ...
- statistics - An April 15, 2002 report in Time Magazine stated that the average ...
- statistics - An April 15, 2002 report in Time Magazine stated that the average ...
- statistics - The average age of doctors in certain hospital is 43 years old. ...

More Related Questions