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Exercise 8-31 Algo The monthly closing stock prices (rounded to the nearest dollar) for Panera Bread...

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Basic Math

Exercise 8-31 Algo The monthly closing stock prices (rounded tothe nearest dollar) for Panera Bread Co. for the first six monthsof 2010 are reported in the following table. [You may find ituseful to reference the t table.] Months Closing Stock PriceJanuary 145 February 144 March 149 April 146 May 150 June 140Source: http://finance.yahoo.com.

a. Calculate the sample mean and the sample standard deviation.(Round intermediate calculations to at least 4 decimal places and\"Sample mean\" and \"Sample standard deviation\" to 2 decimalplaces.)

b. Calculate the 90% confidence interval for the mean stockprice of Panera Bread Co., assuming that the stock price isnormally distributed. (Round \"t\" value to 3 decimal places andfinal answers to 2 decimal places.)

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