Find the probability that a random sample of 16 tubes


Certain tubes manufactured by a company have a mean life of 800 hours and standard deviation of 60 hours. Find the probability that a random sample of 16 tubes taken from the group will have a mean life of:
a)Between 790 and 810 hours
b)Less than 785 hours

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Basic Statistics: Find the probability that a random sample of 16 tubes
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