=+an estimate of . The expected frequencies for various categories (class intervals) can then be calculated. Use the accompanying data along with x 5 13.086 to decide whether the truncated exponential distribution is a plausible model (x0 5 70 here).

Class: 02,8 82,16 162,24 Frequency: 20 8 7 Class: 242,32 322,40 402,48 Frequency: 1 2 1 Class: 482,56 562,64 642,70 Frequency: 0 1 0