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A simple random sample of70items from a population with o=7resulted in a sample mean of 38. If required, round your answers to two decimal places.

A simple random sample of70items from a population with o=7resulted in a sample mean of 38.

If required, round your answers to two decimal places.

a.Provide a90% confidence interval for the population mean.

_____ to_____

b.Provide a95% confidence interval for the population mean.

_____to _____

c.Provide a99% confidence interval for the population mean.

_____to _____

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