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.

12.011.611.912.712.5

11.412.011.711.812.0

Appendix A Statistical Tables

(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:

enter the lower limit of the 90% confidence interval

enter the upper limit of the 90% confidence interval

95% confidence interval:

enter the lower limit of the 95% confidence interval

enter the upper limit of the 95% confidence interval

99% confidence interval:

enter the lower limit of the 99% confidence interval

enter the upper limit of the 99% confidence interval

The point estimate is

enter the point estimate

.

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