Answer Happy

The data set provided below contains the heights in feet of black cherry trees. Compute a 82% confidence interval for the heights of black cherry trees. Source: Ryan, T. A., Joiner, B. L. and Ryan, B. F. (1976) The Minitab Student Handbook. Duxbury Press. Directions: Click on the Data button below to display the data. Copy the data into a statistical software package and click the Data button a second time to hide it. 1. Find the point estimate for the mean heights of black cherry trees. 2. Determine the critical value needed for a 82% confidence interval. 3. Find the margin of error for the 82% confidence interval. 4. Construct the 82% confidence interval for the heights of black cherry trees. Enter your answer as an open interval of the form (a,b). 5. Cherry trees less than 60ft are considered short. Can you conclude that the average height is greater than 60 feet? Yes, the entire confidence is above 60 . No, the entire confidence interval is below 60 . No conclusions can be drawn since the confidence interval contains 60 .