From a large batch of batteries, a sample of size 50 is drawn. The average lifespan of

the batteries is 1200 hours with a standard deviation of 200 hours.

Find the probability that the mean lifespan of the sample is less than 1150

hours. (3 Marks)

asked by guest
on Mar 31, 2025 at 11:01 am



Mathbot Says...

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