Question: Thanks in advance! Confidence Interval for the sample mean A random sample of 30 door-to-door insurance salespersons were asked how long on average they were

Thanks in advance!

Confidence Interval for the sample mean A random sample of 30 door-to-door insurance salespersons were asked how long on average they were able to talk to the potential customer. Their answers revealed a mean of 7.5 minutes. Assume a population standard deviation is equal to 3 minutes Simplify up to two decimals (ex: 0.55) Give a point estimate for the average conversation length |:| Write the standard error(SE) :| Write the Margin of error(E) for 90% confidence level: |:| Write the lower confidence bound using the Margin of Error( xbar-E) |:| Write the upper confidence bound using the Margin of Error( xbar+E) |:|

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