Question: The mean weight 10 randomly selected newborn babies at a local hospital was found to be 7.14 and the standard deviation was found to be 0.87 lbs. If the weights of newborn babies is approximately normally distributed,
a.) Find a 90% confidence interval for the average weight of all newborn babies at this hospital
b.) If you increase the confidence level (1-alpha), will the confidence interval estimate be wider or narrower?
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