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Question 264

A random sample of size n n\,n is taken from a population that is normally distributed with mean 25 and standard deviation 4.

Find the smallest value of n n\,n for which the probability that the sample mean is greater than 27.5 is less than 1%.

[6]
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2 Statistics Questions

  1. A Level
  2. /Maths
  3. /2 Statistics

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