In a psychology journal, researchers reported that a chief executive officer's facial structure can be used to predict a firm's financial performance. The study involved measuring the facial width-to-height ratio (WHR) for each in a sample of 40 CEOs at publicly traded Fortune 500 firms. These WHR values determined by computer anah zing a photo of the CEO's face had a mean of x= 1.96 and a standard deviation of s= 0.17.
Find and interpret a 90% confidence interval for ?, the mean facial WHR for all CEOs at publicly traded Fortune 500 firms (Round to three decimal places as needed.)
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