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.

11.8

11.6

11.9

13.1

12.5

11.4

12.0

11.7

11.8

11.8

(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______?______

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