One of the Companies in EPZA are producing batteries. Thirty AA batteries
were tested to determine how long they would last. The results, to the nearest
minute, were recorded as

follows:
423, 369, 387, 411, 393, 394, 371, 377, 389, 409, 392, 408, 431, 401, 363,
391, 405, 382, 400, 381, 399, 415, 428, 422, 396, 372, 410, 419, 386, 399

Scores| Tally | Frequency
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