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StatisticsQ&A LibraryPart 1A population of values has a normal distribution with μ=227.6μ=227.6 and σ=92.7σ=92.7. You intend to draw a random sample of size n=105n=105.What is the mean of the distribution of sample means?μ¯x= ______What is the standard deviation of the distribution of sample means?(Report answer accurate to 2 decimal places.)σ¯x= ________ Part 2 A population of values has a normal distribution with μ=244 and σ=18.6. You intend to draw a random sample of size n=178.Find the probability that a sample of size n=178 is randomly selected with a mean between 241.8 and 244.4.P(241.8 < M < 244.4) = _______Question

Asked Nov 4, 2019

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Part 1

A population of values has a normal distribution with μ=227.6μ=227.6 and σ=92.7σ=92.7. You intend to draw a random sample of size n=105n=105.

What is the mean of the distribution of sample means?

μ¯x= ______

What is the standard deviation of the distribution of sample means?

(Report answer accurate to 2 decimal places.)

σ¯x= ________

Part 2

A population of values has a normal distribution with μ=244 and σ=18.6. You intend to draw a random sample of size n=178.

Find the probability that a sample of size n=178 is randomly selected with a mean between 241.8 and 244.4.*P*(241.8 < *M* < 244.4) = _______

Step 1

Part 1:

The mean of the distribution of sample means is,

Step 2

Thus, the mean of the distribution of sample means is **227.6**.

The standard deviation of the distribution of sample means is,

Step 3

Thus, the standard deviation of the distribution of sample means is **9.04**.

Part 2:

The probability that a sa...

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