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The 72-hour blastogenesis of chicken peripheral blood lymphocytes from a group treated with PHA and from an untreated group are given below. This variable is not approximately normally distributed. We wish to know if treatment with PHA has an effect on blastogenesis of these cells.

Control 1631 50102 1369 41188 387 498 259 329 4330 5002 658 300

Treated 87700 69553 76215 366 40104 38661 141153 154805 123075 627 126175 11223 300

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