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[See Solution] Given a population of light bulbs has a mean lifespan of 1000 hours and a standard deviation of 56 hours and that the lifespan is normally

Question: Given a population of light bulbs has a mean lifespan of 1000 hours and a standard deviation of 56 hours and that the lifespan is normally distributed.

  1. What is the mean and standard deviation of the sampling distribution when we take all samples of size 25?
  2. If we take larger size samples which of the values (for the mean and standard deviation found in part a) above will change and will it go up or down?

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