Business, 06.12.2021 22:20 alex7881

A veterinarian 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. Based on the following data, a 95% confidence interval is given by: H0: muE = muH vs Ha: muE > muH n x-bar s
Enteroliths group: 5 45 12
Healthy group: 5 28 10
For the data given, the test statistic is:___.
a. 1.96.
b. 1.645.
c. 2.4335.
d. -2.4335.

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