ABSTRACT

Example 2. 7 .4. To ensure meeting a maximum weight specification of 12.00 ounces for a certain electronic component in an aircraft installation, all production of this component is weighed and items that fail to meet this requirement are eliminated. A random sample of 50 units was selected from the screened production. The sample was thus singly truncated on the right with T = 12.00, and it was assumed to be from a normal distribution. Sample data are summarized as n = 50, i = 9.35, s2 = 1.1264, and thus & = 1.1264/(9.35 - 12.00)2 = 0.16040. By interpolation in Table 2.1, we obtain e = 0.00916 (a value that might have been read to three decimals as 0.009 from the graph of Figure 2.1). Estimates fl and &2 are calculated from (2.3.9) and (2.3.12) as

This example was originally given by Cohen (1959).