Forbes magazine published data on the best small firms in 2012.These were firms that had been publicly traded for at least a year, have a stock price of at least $5 per share, and have reported annual revenue between $5 million and $1 billion. Following are the ages of CEOs for a random sample of these firms.

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Use this sample data to construct a 90% confidence interval for the mean age of CEO's for these small firms. Use the Student's t-distribution.

i.State the sample mean _______ii.State the sample standard deviation ________

iii. For the 90% confidence interval, state the lower limit ______and upper limit ______.

Work on excel sheet and show the formulas and steps thanks NO FORMULAS WRITTEN ON BOOKNOTES