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A population of values has a normal distribution with =226=226 and =41.8=41.8. If a random sample of size n=15n=15 is selected, Find the probability that

A population of values has a normal distribution with =226=226 and =41.8=41.8. If a random sample of size n=15n=15 is selected,

  1. Find the probability that a single randomly selected value is less than 231.4. Round your answer to four decimals.
  2. What is the standard deviation of the distribution of sample means? Round to two decimal places.

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