Construct 90%, 95%, and 99% confidence intervals to estimatefrom the following data. State the point estimate. Assume the data come from a normally distributed population.

12.1 11.6 11.9 12.6 12.5

11.4 12.0 11.7 11.8 12.1

(Round the intermediate values to 4 decimal places. Round t values to 3 decimal places. Round your answers to 2 decimal places.)

90% confidence interval:______?______ ______?______

95% confidence interval:______?______ ______?______

99% confidence interval:______?______ ______?______

The point estimate is______?______