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 11 months ago
three randomly selected households are surveyed. the numbers of people in the households are 1,3,8 assume that samples of size n =2 are randomly selelcted with replacement from the population of 1,3,8. Listed below are the nine different sampls
1,1 1,3 1,8 3,1 3,3 3,8 8,1 8,3 8,8
find the variance of each of the nine samples then summerize the sampling distribution of the variances in the format of a table representing the probability distribution of the distinct variance values
s^2 Probability
3.3
1
6.3
49
 11 months ago
three randomly selected households are surveyed. the numbers of people in the households are 1,3,8 assume that samples of size n =2 are randomly selelcted with replacement from the population of 1,3,8. Listed below are the nine different sampls 1,1 1,3 1,8 3,1 3,3 3,8 8,1 8,3 8,8 find the variance of each of the nine samples then summerize the sampling distribution of the variances in the format of a table representing the probability distribution of the distinct variance values s^2 Probability 3.3 1 6.3 49

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andijo76
 11 months ago
Best ResponseYou've already chosen the best response.1can anyone help me ??????

StClowers
 11 months ago
Best ResponseYou've already chosen the best response.0We have the following cases to consider (1,1), (1,3), (1,8), (3,1) ,(3.3) (3,8), (8,1) (8,3), (8.8). Well we know three of our samples will have a variance of 0. The variance for the case when we have 1 and 3 is 3.3; likewise, the variance for when we have 8 and 3 is 6.3 and the variance for when we have 1 and 8 is 49. The possible variances are 3.3, 1, 6.3, and 49. The probability of having a variance of 1 is 3/9. For a variance of 3.3 its 2/9, for 6.3 its 2/9 and lastly, for a variance of 49 its 2/9. As you can see, 3/9 + 2/9 + 2/9 + 2/9 = 1. I had this same question and this was the answer....see if you plug this in if its works.

andijo76
 11 months ago
Best ResponseYou've already chosen the best response.1i hope it does to trying to do it on excel does not work so well thank you so much

StClowers
 11 months ago
Best ResponseYou've already chosen the best response.0I think thats how you do it...I would plug in those fractions and see...tryin to help cuz I know not many other ppl are. lol

andijo76
 11 months ago
Best ResponseYou've already chosen the best response.1someone tried to show me how to use excell but that was a nightmare

StClowers
 11 months ago
Best ResponseYou've already chosen the best response.0Yeah, I dont like excel either.
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