A Normally distributed population

timer Asked: Oct 15th, 2015

Question description

  1. A normally distributed population has mean 57.7 and standard deviation 12.1.

    1. Find the probability that a single randomly selected element X of the population is less than 45.
    2. Find the mean and standard deviation of X⎯⎯ for samples of size 16.
    3. Find the probability that the mean of a sample of size 16 drawn from this population is less than 45.

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