On 6/03/2009, at 12:03 PM, SIrEllwood wrote:
Hi all,
3. The probabilities are 0.06, 0.21, 0.24, 0.18, 0.14, 0.10, 0.04,
0.02 and
0.01 that an airline will
receive 0,1,2,3,4,5,6,7 or 8 complaints per day about its luggage.Find
e(x) and e(x^2)
Give the R commands you use and the two numerical values.
Use the sample function to simulate complaints over 500 days. Give
the R command you use and draw a barplot of the simulated data.
Comment on
how the pattern
you see relates to the probabilities in the question above.
I think i have done the first part and got e(x) = 2.75 and e(x^2)=
10.59
I have no idea how to simulate complaints over 500 days and draw a
barplot.
can anyone help?
From the Posting Guide:
Basic statistics and classroom homework: R-help is not intended for
these.
cheers,
Rolf Turner
P. S. Your homework question says ``Use the sample function'' So
read up
on the sample function:
?sample
You will also find ?barplot useful.
R. T.
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