Question: An experimenter is designing an experiment to test tetanus toxoid in guinea pigs. The survival of the animal following the dose of the toxoid is

An experimenter is designing an experiment to test tetanus toxoid in guinea pigs. The survival of the animal following the dose of the toxoid is a random phenomenon. Past experience has shown that the random variable that describes such a situation follows the log-normal distribution with μy = 0 and σy = 0.65. As a requirement of good design the experimenter must choose doses at which the probability of surviving is 0.20, 0.50, and 0.80. What three doses should he choose?

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