Question

Statistics Question. Please help:

I have 6 samples in poisson distribution, taken at different times of the day, of how many out of the first 100 cars passing were red.

How would one prove or disprove a hypothesis that the number of red cars will be higher in the morning than at night?

Answer 1

is this a project youve done and gathered data?

Answer 2

from what i recall of poisson, we take the number of arrivals within a time span is the average/mean

then we run it thru the exponential distribution to determine this and that.

Answer 3

and in stats we do not "prove" any hypothesisses, we simple fail to reject them, or reject them based on the evidence that is presented to us.

Answer 4

you're right. i'm using incorrect terms.

yes, the data is gathered (except its not red cars, but equivalent)

would it be a valid or possibly acceptable hypothesis that: the 1st sample will have a higher mean than than the 4th sample?

which comparisons would need to be done?

Answer 5

@amistre64 summoning so you eventually see it :)

Answer 6

rule of thumb, the null hypot has a condition of equality to it ... why i do not know, something about traditon and thats the way we do it. :)

@zarkon would most likely know better than me about this distribution stuff. He seems to be a sevant with them :)

Answer 7

thanks for the reference and the time

Answer 8

@rational you got any thoughts for this? its beyond my ken