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Austin Community College District *

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1342

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Statistics

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Apr 3, 2024

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Uploaded by BarristerLeopard4016

5. The dataset NFLContracts2019 (use the file from the 3" edition) contains the yearly salary (in millions of dollars) from the contracts of all players on an NFL roster at the start of the 2019 season. a. What is the mean and standard deviation for the entire population of players? Use correct notation for the mean and standard deviation. Describe the shape of the population. What does one dot in this distribution represent? Population Size: Mean Standard Deviation Shape One Dot = b. Now use StatKey to generate a sampling distribution of sample means using a sample of size = 5, using a few thousand samples. Include a printout of your sampling distribution with your homework submission. What are the mean and standard error (that is the standard deviation of the sample means) for the sampling distribution for samples of size n = 5?7 What is the shape of this sampling distribution? What does one dot on this distribution represent? Sample Size: Number of Samples: Mean Standard Error Shape One Dot = c. Repeat what you did in part (b), but this time generate a sampling distribution with samples of size n = 50. What is the mean and standard error for this distribution? What is the shape of the sampling distribution? What does one dot on this distribution represent? Include a printout of your sampling distribution with your homework submission. Sample Size: Number of Samples: Mean Standard Error Shape One Dot = d. As the sample size gets larger, the mean of the sampling distribution and the standard error of the sampling distribution gets

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