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A Method of Obtaining an Exact Confidence Interval for the Common Mean of Several Normal Populations
Author(s) -
Fairweather William R.
Publication year - 1972
Publication title -
journal of the royal statistical society: series c (applied statistics)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.205
H-Index - 72
eISSN - 1467-9876
pISSN - 0035-9254
DOI - 10.2307/2346273
Subject(s) - statistics , confidence interval , mathematics , interval (graph theory) , combinatorics
Summary A linear combination T of Student's t statistics is proposed as a practical method of obtaining confidence intervals for the common mean, and the distribution function of T is conveniently approximated for the general case. Exact percentage points of T are compared with those based on this approximation for two populations and various sample size configurations.