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A sample of 100 participants had a mean family size of 5.3 and a standard deviation of 1.6. Researchers believe this value appears high given

A sample of 100 participants had a mean family size of 5.3 and a standard deviation of 1.6. Researchers believe this value appears high given that the mean family size in the population is 4.9. One wishes to test the hypothesis that 5.3 is greater than the population family size using = 0.05. What is the standard error?

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