A new diet has been developed for raising beef cows. Two random samples of size

Question

A new diet has been developed for raising beef cows. Two random samples of size nine are independently selected, and one is given the standard diet and the other is given the new diet. After 18 weeks, the weight gain was measured, and it was found that x_t bar = 30 with s_i = 8 and x_2 bar = 26 with s_2 = 6. Let mu_1 and mu_2 represent the mean weight gain we would observe for the entire population of beef cows when on, respectively, a new diet and a standard diet. Assume that two-sample I procedures arc safe to use. The degrees of freedom for these I procedures arc closest to 14. 12. 9. 8.

Explanation / Answer

Solution:

option A) 14
here given n1 = 9, n2 = 9
degrees of freedom = n1+ n2 -2 = 16
so option (A) is nearest value

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