Help DO NOT SEND A LINK What is the mean of all six sample proportions?
Four cars are for sale. The red car costs $15,000, the
blue car costs $18,000, the green car costs $22,000, and
the white car costs $20,000. Use the table to identify all
possible samples of size n = 2 from this population and
the proportion of each sample that is red. The first
sample is done for you.
What is the population proportion of red cars?
Is the sample proportion an unbiased estimator of the
population proportion?
Sample
n = 2
RB R, GR, W BGB, W GW
Red?
yes, yes, yes,
no no no
no, no,
no no
no,
no
Proportion
of red
0.5
0.5
0.5
0
0
0