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A population has a mean of 220 and a standard deviation of 120. If a sample...

A population has a mean of 220 and a standard deviation of 120. If a sample of size 6 is taken, what is the probability the sample mean is greater than 291.6? Enter your answer as a decimal to 3 decimal places.

A population has a mean of 486 and a standard deviation of 121. If a sample of size 10 is taken, what is the probability the sample mean is greater than 506.4? Enter your answer as a decimal to 3 decimal places.

A population has a mean of 475 and a standard deviation of 106. If a sample of size 5 is taken, what is the probability the sample mean is greater than 541.8? Enter your answer as a decimal to 3 decimal places.

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