Question: Help please!! 10.3 10.3 Excel Activity 1 - Confidence Interval fo... X Question 1 X 0/10 a. Let Submit di denote the change in price

Help please!! 10.3 10.3 Excel Activity 1 - Confidence Interval fo...

Help please!! 10.3

10.3 Excel Activity 1 - Confidence Interval fo... X Question 1 X 0/10 a. Let Submit di denote the change in price per share for company i where di = 1st quarter of 2012 price per share minus the beginning of 2012 price per share. Use the sample mean of these values to estimate the dollar amount a share of stock has changed during the 1st quarter 7.31 (to 2 decimals) b. What is the 95% confidence interval estimate of the population mean change in the price per share of stock during the first quarter? Interpret this result. Standard deviation (to 2 decimals) : Confidence interval (to 2 decimals) : The mean price per share has increase between % and % over the three-month period (to 1 decimal)

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