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qwertylol12345
21.01.2020 •
Mathematics
Aveterinarian does research on the causes of enteroliths, stones that develop in the colon of horses. she suspects that feeding alfalfa might be a cause. to investigate that suspicion, she selects five horses that are known to have enteroliths and compares the number of flakes of alfalfa they have eaten over a month with the number of flakes eaten by five horses free of enteroliths. if she calculates a two-sample confidence interval by hand for the difference in the mean number of flakes fed to horses with and without enteroliths the degrees of freedom she should use are:
10.
8.
4.
5.
Solved
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Ответ:
8
Step-by-step explanation:
The degree of freedom for t-distribution of testing the differnce between the two population mean is given by :-
, where
= Size of first sample.
As per given ,
Veterinarian selects five horses that are known to have enteroliths and compares the number of flakes of alfalfa they have eaten over a month with the number of flakes eaten by five horses free of enteroliths.
i.e.
and ![n_2=5](/tpl/images/0463/3327/8c07c.png)
Now , If she calculates a two-sample confidence interval by hand for the difference in the mean number of flakes fed to horses with and without enteroliths the degrees of freedom she should use are
Hence, the correct answer is 8.
Ответ:
I’m not bre and char
Step-by-step explanation:
But from what I can see there’s no evidence or anything to solve