Question: Using Excel, show the correct function (i.e. =CONFIDENCE(... to solve the equation. At the end of 1990, 1991, and 1992, the average prices of a

Using Excel, show the correct function (i.e. "=CONFIDENCE(..." to solve the equation.

At the end of 1990, 1991, and 1992, the average prices of a share of stock in a portfolio were $34.75, $34.65, and $31.25 respectively. To investigate the average share price at the end of 1993, a random sample of 40 stocks was drawn and their closing prices on the last trading day of 1993 were observed with a mean of 34.55 and a standard deviation of 19.50. Estimate the average price of a share of stock in the portfolio at the end of 1993 with a 95 percent confidence interval.

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