Key points are not available for this paper at this time.
Let yt (t = 1, 2,..., k) be statistical quantities normally and independently distributed with means fit and variances A,erf, respectively, where the A, are known constants but nothing is known about /it and cr\\. Suppose that the data provide estimates sf of the T \\ which are distributed, respectively, as;tfcrf// ( where/ ( is the number of degrees of freedom of x2-
B. L. Welch (1951) studied this question.