1. If n=18, ¯x(x-bar)=49, and s=4, find the margin of error at a 99% confidence level Give your answer to two decimal places.   2. If n=15, ¯x=49, and s=4, construct a confidence interval at a 90% confidence level. Assume the data came from a normally distributed population. Give your answers to one decimal place.  < μ <

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1. If n=18, ¯x(x-bar)=49, and s=4, find the margin of error at a 99% confidence level

Give your answer to two decimal places.

 

2. If n=15, ¯x=49, and s=4, construct a confidence interval at a 90% confidence level. Assume the data came from a normally distributed population.

Give your answers to one decimal place.

 < μ < 

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