Current research indicates that the distribution of the

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Current research indicates that the distribution of the life expectancies of a certain protozoan is normal with a mean of 46 days and a standard deviation of 10.5 days. Find the probability that a simple random sample of 49 protozoa will have a mean life expectancy of 47 or more days.

a) 0.7475

b) 0.5379

c) 0.4525

d) 0.2525

e) 0.5050

f) None of the above

Reference no: EM13601970

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