A simple random sample of 10 items resulted in a sample mean of 10. The population standard deviation is o = 3. Round your answers to two decimal places. a. What is the standard error of the mean, oz? b. At 95% confidence, what is the margin of error?

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plZ answer a and b part
A simple random sample of 10 items resulted in a sample mean of 10. The population standard deviation is o= 3. Round your answers to two
decimal places.
a. What is the standard error of the mean, oz?
b. At 95% confidence, what is the margin of error?
Transcribed Image Text:A simple random sample of 10 items resulted in a sample mean of 10. The population standard deviation is o= 3. Round your answers to two decimal places. a. What is the standard error of the mean, oz? b. At 95% confidence, what is the margin of error?
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