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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,

Find the probability that a single randomly selected value is less than 231.4. Round your answer to four decimals.

What is the standard deviation of the distribution of sample means? Round to two decimal places.

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